Chapter Electrostatic Potential and Capacitance

Size: px
Start display at page:

Download "Chapter Electrostatic Potential and Capacitance"

Transcription

1 Chapter Electrostatic Potential and Capacitance C/ 2 C/2 Ans: Q6. MockTime.com Q1. A 4µF conductor is charged to 400 volts and then its plates are joined through a resistance of 1 kω. The heat produced in the resistance is [1989] 0.16 J 1.28 J 0.64 J 0.32 J Ans: Q2. A hollow metal sphere of radius 10 cm is charged such that the potential on its surface is 80 V. The potential at the centre of the sphere is [1994] zero 80 V 800 V 8 V Ans: Q3. [1999] 24 μf 18 μf 12 μf 6 μf Ans: Q7. A capacitor is charged to store an energy U. The charging battery is disconnected. An identical capacitor is now connected to the first capacitor in parallel. The energy in each of the capacitor is [2000] U/ 2 3U/ 2 U U/ 4 Ans: Q8. In a parallel plate capacitor, the distance between the plates is d and potential difference across the plates is V. Energy stored per unit volume between the plates of capacitor is [2001] [1994] ± C ± C ± C ± C Ans: Q4. If the potential of a capacitor having capacity 6 μf is increased from 10 V to 20 V, then increase in its energy will be [1995] J J J J Ans: Q5. A parallel plate condenser with oil between the plates (dielectric constant of oil K= 2) has a capacitance C. If the oil is removed, then capacitance of the capacitor becomes [1997, 99] 2C 2C Ans: Q9. The capacity of a parallel plate condenser is 10 μf when the distance between its plates is 8 cm. If the distance between the plates is reduced to 4 cm then the capacity of this parallel plate condenser will be [2001] 5 μf 10 μf 20 μf 40 μf Ans: Q10. Energy stored in a capacitor is [2001]

2 MockTime.com Ans: Q11. A capacitor C1 is charged to a potential difference V. The charging battery is then removed and the capacitor is connected to an uncharged capacitor C2. The potential difference across the combination is [2002] Q15. An electric dipole has the magnitude of its charge as q and its dipole moment is p. It is placed in uniform electric field E. If its dipole moment is along the direction of the field, the force on it and its potential energy are respectively [2004] q.e and max. 2 q.e and min. q.e and p.e zero and min. Ans: Q16. A bullet of mass 2 g is having a charge of 2μC. Through what potential difference must it be accelerated, starting from rest, to acquire a speed of 10 m/s? [2004] 50 V 5 kv 50 KV 5 V Ans: Q17. Ans: Q12. A solid spherical conductor is given a charge. The electrostatic potential of the conductor is [2002] constant throughout the conductor largest at the centre largest on the surface largest somewhere between the centre and the surface Ans: Q13. Each corner of a cube of side l has a negative charge, q. The electrostatic potential energy of a charge q at the centre of the cube is [2002] [coordinates (0, a)] Ans: Ans: Q18. Q14. Three capacitors each of capacity 4μF are to be connected in such a way that the effective capacitance is 6 μf. This can be done by [2003] connecting two in parallel and one in series connecting all of them in series connecting them in parallel connecting two in series and one in parallel Ans:

3 increases decreases Ans: MockTime.com Q21. [2005] 8q1 6q1 8q2 6q2 Ans: Q19. [2007] Ans: Q22. [2005] 4/7 3/22 7/4 22/3 Ans: [2007] Q20. A parallel plate air capacitor is charged to a potential difference of V volts. After disconnecting the charging battery the distance between the plates of the capacitor is increased using an insulating handle. As a result the potential difference between the plates [2006] does not change becomes zero Ans: Q23. The electric potential at a point in free space due to a charge Q coulomb is Q volts. The electric field at that point is [2008] 4 πε0 Q volt/m 12 πε0 Q volt/m

4 4 πε0 Q volt/m 12 πε0 Q volt/m Ans: Q24. The energy required to charge a parallel plate condenser of plate separation d and plate area of crosssection Asuch that the uniform electric field betwen the plates is E, is [2008] Ans: Q25. Three concentric spherical shells have radii a, b and c (a < b < c) and have surface charge densities ς, ς and ς respectively. If VA, VB and VC denotes the potentials of the three shells, then for c = a + b, we have [2009] VC = VB VA VC VB VA VC= VB= VA VC= VA VB Ans: Q26. Three capacitors each of capacitance C and of breakdown voltage V are joined in series. The capacitance and breakdown voltage of the combination will be [2009] 3C, V/3 C/3, 3V 3C, 3V C/3, V/3 Ans: Q27. [2009] Ans: Q28. A series combination of n1 capacitors, each of value C1, is charged by a source of potential difference 4 V. When another parallel combination of n2 capacitors, each of value C2, is charged by a source of potential difference V, it has the same (total) energy stored in it, MockTime.com as the first combination has. The value of C2, in terms of C1, is then [2010] Ans: Q29. A condenser of capacity C is charged to a potential difference of V1. The plates of the condenser are then connected to an ideal inductor of inductance L. The current through the inductor when the potential difference across the condenser reduces to V2 is Ans: Q30. Two parallel metal plates having charges + Q and Q face each other ata certain distance between them. If the plaves are now dipped in kerosene oil tank, the electric field between the plates will remain same become zero increases decrease Ans: Q31. A parallel plate condenser has a uniform electric field E(V/m) in the space between the plates. If the distance between the plates is d(m) and area of each plate is A(m 2 ) the energy (joules) stored in the condenser is [2011]

5 Ans: Q32. Ans: Q36. MockTime.com [2011] Ans: Q33. The potential energy of particle in a force field is U = A/r 2 B/r, where A and B are positive constants and r is the distance of particle from the centre of the field. For stable equilibrium, the distance of the particle is: [2012] B/ 2A 2A/ B A/ B B/ A Ans: Q34. Four point charges Q, q, 2q and 2Q are placed, one at each corner of the square. The relation between Q and q for which the potential at the centre of the square is zero is: [2012] [NEET 2 013] maximum at B maximum at C same at all the three points A, Band C maximum at A Ans: Q1. Q2. Q3. Q4. Ans: Q35. A parallel plate capacitor has a uniform electric field E in the space between the plates. If the distance between the plates is d and area of each plate is A, the energy stored in the capacitor is: [2012M] Q5.

6 MockTime.com Q6. Q8. Q9. Q10. Q11. Q7. Q12. Q13.

7 MockTime.com Q14. Q19. Q15. Q16. Q17. Q18. Q20.

8 MockTime.com Q21. Q22. Q23. Q26. Q24. Q27. Q28. Q25.

9 MockTime.com Q29. Q33. Q30. Q34. Q31. Q32.

10 Q35. MockTime.com Q36.

PHYSICS. Electrostatics

PHYSICS. Electrostatics Electrostatics Coulomb s Law: SYNOPSIS SI unit of electric intensity is NC -1 Dimensions The electric intensity due to isolated point charge, Electric dipole moment, P = q (2a), SI unit is C m Torque on

More information

1)Tw o charges g 4q q and q q are placed

1)Tw o charges g 4q q and q q are placed Electrostatics 1)Two charges 4q and q are placed a distance r apart. A charge Q is placed exactly mid way between them. What will be the value of Q so that charge 4q experiences no net force? q/4 q/4 q4

More information

Electrostatics Previous Questions (AIPMT). An electric dipole of moment p is placed in an electric field of intensity E. The dipole acuires a position such that the axis of the dipole makes an angle θ

More information

Phys222 W16 Exam 2: Chapters Key. Name:

Phys222 W16 Exam 2: Chapters Key. Name: Name: Please mark your answer here and in the scantron. A positively charged particle is moving in the +y-direction when it enters a region with a uniform electric field pointing in the +y-direction. Which

More information

13 - ELECTROSTATICS Page 1 ( Answers at the end of all questions )

13 - ELECTROSTATICS Page 1 ( Answers at the end of all questions ) 3 - ELECTROSTATICS Page ) Two point charges 8 and - are located at x = 0 and x = L respectively. The location of a point on the x axis at which the net electric field due to these two point charges is

More information

2014 F 2014 AI. 1. Why must electrostatic field at the surface of a charged conductor be normal to the surface at every point? Give reason.

2014 F 2014 AI. 1. Why must electrostatic field at the surface of a charged conductor be normal to the surface at every point? Give reason. 2014 F 1. Why must electrostatic field at the surface of a charged conductor be normal to the surface at every point? Give reason. 2. Figure shows the field lines on a positive charge. Is the work done

More information

Physics (

Physics ( Exercises Question 2: Two charges 5 0 8 C and 3 0 8 C are located 6 cm apart At what point(s) on the line joining the two charges is the electric potential zero? Take the potential at infinity to be zero

More information

F 13. The two forces are shown if Q 2 and Q 3 are connected, their charges are equal. F 12 = F 13 only choice A is possible. Ans: Q2.

F 13. The two forces are shown if Q 2 and Q 3 are connected, their charges are equal. F 12 = F 13 only choice A is possible. Ans: Q2. Q1. Three fixed point charges are arranged as shown in Figure 1, where initially Q 1 = 10 µc, Q = 15 µc, and Q 3 = 5 µc. If charges Q and Q 3 are connected by a very thin conducting wire and then disconnected,

More information

7. A capacitor has been charged by a D C source. What are the magnitude of conduction and displacement current, when it is fully charged?

7. A capacitor has been charged by a D C source. What are the magnitude of conduction and displacement current, when it is fully charged? 1. In which Orientation, a dipole placed in uniform electric field is in (a) stable (b) unstable equilibrium. 2. Two point charges having equal charges separated by 1 m in distance experience a force of

More information

Physics (

Physics ( Question 2.12: A charge of 8 mc is located at the origin. Calculate the work done in taking a small charge of 2 10 9 C from a point P (0, 0, 3 cm) to a point Q (0, 4 cm, 0), via a point R (0, 6 cm, 9 cm).

More information

Q1. Three point charges are arranged as shown in FIGURE 1. Find the magnitude of the net electrostatic force on the point charge at the origin.

Q1. Three point charges are arranged as shown in FIGURE 1. Find the magnitude of the net electrostatic force on the point charge at the origin. Coordinator: Saleem Rao Monday, May 01, 2017 Page: 1 Q1. Three point charges are arranged as shown in FIGURE 1. Find the magnitude of the net electrostatic force on the point charge at the origin. A) 1.38

More information

The third charge has to be along the line joining the two charges, outside the two charges, and closer to the weaker.

The third charge has to be along the line joining the two charges, outside the two charges, and closer to the weaker. Coordinator: Dr. M.F.Al-Kuhaili Thursday, uly 30, 2015 Page: 1 Q1. Two point charges q and 4q are at x = 0 and L, respectively. A third charge q is to be placed such that the net force on it is zero. What

More information

Consider a point P on the line joining the two charges, as shown in the given figure.

Consider a point P on the line joining the two charges, as shown in the given figure. Question 2.1: Two charges 5 10 8 C and 3 10 8 C are located 16 cm apart. At what point(s) on the line joining the two charges is the electric potential zero? Take the potential at infinity to be zero.

More information

ELECTROSTATICS (Important formulae and Concepts) I Electric charges and Coulomb s law

ELECTROSTATICS (Important formulae and Concepts) I Electric charges and Coulomb s law ELECTROSTATICS (Important formulae and Concepts) I Electric charges and Coulomb s law II Electric Field and Electric Dipole www.nrpschool.com www.nrpschool.com III ELECTRIC POTENTIAL www.nrpschool.com

More information

A) 1, 2, 3, 4 B) 4, 3, 2, 1 C) 2, 3, 1, 4 D) 2, 4, 1, 3 E) 3, 2, 4, 1. Page 2

A) 1, 2, 3, 4 B) 4, 3, 2, 1 C) 2, 3, 1, 4 D) 2, 4, 1, 3 E) 3, 2, 4, 1. Page 2 1. Two parallel-plate capacitors with different plate separation but the same capacitance are connected in series to a battery. Both capacitors are filled with air. The quantity that is NOT the same for

More information

W05D1 Conductors and Insulators Capacitance & Capacitors Energy Stored in Capacitors

W05D1 Conductors and Insulators Capacitance & Capacitors Energy Stored in Capacitors W05D1 Conductors and Insulators Capacitance & Capacitors Energy Stored in Capacitors W05D1 Reading Assignment Course Notes: Sections 3.3, 4.5, 5.1-5.4 1 Outline Conductors and Insulators Conductors as

More information

Roll Number SET NO. 42/1

Roll Number SET NO. 42/1 Roll Number SET NO. 4/1 INDIAN SCHOOL MUSCAT FIRST TERM EXAMINATION PHYSICS CLASS: XII Sub. Code: 04 Time Allotted: Hrs 0.04.018 Max. Marks: 70 General Instructions: 1. All questions are compulsory. There

More information

INDIAN SCHOOL MUSCAT FIRST TERM EXAMINATION PHYSICS

INDIAN SCHOOL MUSCAT FIRST TERM EXAMINATION PHYSICS Roll Number SET NO. General Instructions: INDIAN SCHOOL MUSCAT FIRST TERM EXAMINATION PHYSICS CLASS: XII Sub. Code: 04 Time Allotted: Hrs 0.04.08 Max. Marks: 70. All questions are compulsory. There are

More information

Chapter 25. Capacitance

Chapter 25. Capacitance Chapter 25 Capacitance 1 1. Capacitors A capacitor is a twoterminal device that stores electric energy. 2 2. Capacitance The figure shows the basic elements of any capacitor two isolated conductors of

More information

AP Physics Study Guide Chapter 17 Electric Potential and Energy Name. Circle the vector quantities below and underline the scalar quantities below

AP Physics Study Guide Chapter 17 Electric Potential and Energy Name. Circle the vector quantities below and underline the scalar quantities below AP Physics Study Guide Chapter 17 Electric Potential and Energy Name Circle the vector quantities below and underline the scalar quantities below electric potential electric field electric potential energy

More information

Class 5 : Conductors and Capacitors

Class 5 : Conductors and Capacitors Class 5 : Conductors and Capacitors What is a conductor? Field and potential around conductors Defining and evaluating capacitance Potential energy of a capacitor Recap Gauss s Law E. d A = Q enc and ε

More information

Phys102 Second Major-161 Zero Version Coordinator: Dr. Naqvi Monday, December 12, 2016 Page: 1

Phys102 Second Major-161 Zero Version Coordinator: Dr. Naqvi Monday, December 12, 2016 Page: 1 Coordinator: Dr. Naqvi Monday, December 12, 2016 Page: 1 Q1. Two point charges, with charges q1 and q2, are placed a distance r apart. Which of the following statements is TRUE if the electric field due

More information

shown in Fig. 4, is initially uncharged. How much energy is stored in the two capacitors after the switch S is closed for long time?

shown in Fig. 4, is initially uncharged. How much energy is stored in the two capacitors after the switch S is closed for long time? Chapter 25 Term 083 Q13. Each of the two 25-µF capacitors, as shown in Fig. 3, is initially uncharged. How many Coulombs of charge pass through ammeter A after the switch S is closed for long time? A)

More information

Downloaded from Downloaded from

Downloaded from   Downloaded from LEVEL 1 1. How many electrons will have a total charge of 1 coulomb? 2. Find the electric field intensity due to a charge of 5 10-8 C at a point 50 cm from it in vacuum 3. An electric charge of 2 c experience

More information

Phys102 Second Major-181 Zero Version Coordinator: Kunwar, S Monday, November 19, 2018 Page: 1

Phys102 Second Major-181 Zero Version Coordinator: Kunwar, S Monday, November 19, 2018 Page: 1 Coordinator: Kunwar, S Monday, November 19, 2018 Page: 1 Q1. A neutral metal ball is suspended by a vertical string. When a positively charged insulating rod is placed near the ball (without touching),

More information

Electrostatics. 4πε 2) + Q / 2 4) 4 Q

Electrostatics. 4πε 2) + Q / 2 4) 4 Q Two spheres A and B of radius a and b respectively are at the same potential The ratio of the surface charge density of A to B is: ) a / b ) b / a a / b b / a Two free protons are separated by a distance

More information

Gurgaon TOPIC: ELECTROSTATIC Assignment 1 (2018)

Gurgaon TOPIC: ELECTROSTATIC Assignment 1 (2018) LJPS Class XII Gurgaon TOPIC: ELECTROSTATIC Assignment (08). A uniform electric field E exists between two charged plates as shown in figure. What would be the work done in moving a charge q along the

More information

---------------------------------------------------------------------------------------------------------- PHYS 2326 University Physics II Class number ---------------------------------------------------------------------------------------------------------------------

More information

Física Básica Experimental I Cuestiones Tema VII. Electrostática. Soluciones incluidas. 1.

Física Básica Experimental I Cuestiones Tema VII. Electrostática. Soluciones incluidas. 1. 1. A cubical surface with no charge enclosed and with sides 2.0 m long is oriented with right and left faces perpendicular to a uniform electric field E of (1.6 10 5 N/C) î. The net electric flux E through

More information

1. zero. Where an electric field line crosses an equipotential surface, the angle between the field line and the equipotential is

1. zero. Where an electric field line crosses an equipotential surface, the angle between the field line and the equipotential is Week 5 Where an electric field line crosses an equipotential surface, the angle between the field line and the equipotential is 1. zero 2. between zero and 90 3. 90 4. not enough information given to

More information

Basics of Network Theory (Part-I)

Basics of Network Theory (Part-I) Basics of Network Theory (Part-I) 1. One coulomb charge is equal to the charge on (a) 6.24 x 10 18 electrons (b) 6.24 x 10 24 electrons (c) 6.24 x 10 18 atoms (d) none of the above 2. The correct relation

More information

NR/RR. Set No. 2 CODE NO: NR/RR210204

NR/RR. Set No. 2 CODE NO: NR/RR210204 Set No. 2 II B.Tech I Semester Examinations,May 2011 ELECTROMAGNETIC FIELDS Electrical And Electronics Engineering Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks

More information

Lecture 8 Multiple Choice Questions :

Lecture 8 Multiple Choice Questions : Lecture 8 Multiple Choice Questions : 1. A point charge -3Q lies at the centre of a conducting shell of radius 2R. The net charge on the outer surface of the shell is -3Q Zero +1.5 Q d. +3Q 2. Two identical

More information

Circuits Practice Websheet 18.1

Circuits Practice Websheet 18.1 Circuits Practice Websheet 18.1 Multiple Choice Identify the choice that best completes the statement or answers the question. 1. How much power is being dissipated by one of the 10-Ω resistors? a. 24

More information

ELECTROSTATIC CBSE BOARD S IMPORTANT QUESTIONS OF 1 MARKS

ELECTROSTATIC CBSE BOARD S IMPORTANT QUESTIONS OF 1 MARKS ELECTROSTATIC CBSE BOARD S IMPORTANT QUESTIONS OF 1 MARKS 1. Name any two basic properties of electric charge. [1] 2. Define the term electric dipole-moment. [1] 3. Write the physical quantity, which has

More information

PHY102 Electricity Course Summary

PHY102 Electricity Course Summary TOPIC 1 ELECTOSTTICS PHY1 Electricity Course Summary Coulomb s Law The magnitude of the force between two point charges is directly proportional to the product of the charges and inversely proportional

More information

Capacitance and Dielectrics

Capacitance and Dielectrics Slide 1 / 39 Capacitance and Dielectrics 2011 by Bryan Pflueger Capacitors Slide 2 / 39 A capacitor is any two conductors seperated by an insulator, such as air or another material. Each conductor has

More information

Class XII Chapter 1 Electric Charges And Fields Physics

Class XII Chapter 1 Electric Charges And Fields Physics Class XII Chapter 1 Electric Charges And Fields Physics Question 1.1: What is the force between two small charged spheres having charges of 2 10 7 C and 3 10 7 C placed 30 cm apart in air? Answer: Repulsive

More information

Chapter 25. Capacitance

Chapter 25. Capacitance Chapter 25 Capacitance 25.2: Capacitance: 25.2: Capacitance: When a capacitor is charged, its plates have charges of equal magnitudes but opposite signs: q+ and q-. However, we refer to the charge of a

More information

Exam 1 Solutions. The ratio of forces is 1.0, as can be seen from Coulomb s law or Newton s third law.

Exam 1 Solutions. The ratio of forces is 1.0, as can be seen from Coulomb s law or Newton s third law. Prof. Eugene Dunnam Prof. Paul Avery Feb. 6, 007 Exam 1 Solutions 1. A charge Q 1 and a charge Q = 1000Q 1 are located 5 cm apart. The ratio of the electrostatic force on Q 1 to that on Q is: (1) none

More information

Capacitance and capacitors. Dr. Loai Afana

Capacitance and capacitors. Dr. Loai Afana apacitance and capacitors apacitors apacitors are devices that store energy in an electric field. apacitors are used in many every-day applications Heart defibrillators amera flash units apacitors are

More information

Capacitance. PHY2049: Chapter 25 1

Capacitance. PHY2049: Chapter 25 1 apacitance PHY049: hapter 5 1 oulomb s law Electric fields Equilibrium Gauss law What You Know: Electric Fields Electric fields for several charge configurations Point Dipole (along axes) Line Plane (nonconducting)

More information

SELAQUI INTERNATIONAL SCHOOL, DEHRADUN

SELAQUI INTERNATIONAL SCHOOL, DEHRADUN CLASS XII Write Short Note: Q.1: Q.2: Q.3: SELAQUI INTERNATIONAL SCHOOL, DEHRADUN ELECTROSTATICS SUBJECT: PHYSICS (a) A truck carrying explosive has a metal chain touching the ground. Why? (b) Electric

More information

[1] (b) Fig. 1.1 shows a circuit consisting of a resistor and a capacitor of capacitance 4.5 μf. Fig. 1.1

[1] (b) Fig. 1.1 shows a circuit consisting of a resistor and a capacitor of capacitance 4.5 μf. Fig. 1.1 1 (a) Define capacitance..... [1] (b) Fig. 1.1 shows a circuit consisting of a resistor and a capacitor of capacitance 4.5 μf. S 1 S 2 6.3 V 4.5 μf Fig. 1.1 Switch S 1 is closed and switch S 2 is left

More information

Reading: Electrostatics 3. Key concepts: Capacitance, energy storage, dielectrics, energy in the E-field.

Reading: Electrostatics 3. Key concepts: Capacitance, energy storage, dielectrics, energy in the E-field. Reading: Electrostatics 3. Key concepts: Capacitance, energy storage, dielectrics, energy in the E-field. 1.! Questions about charging and discharging capacitors. When an uncharged capacitor is connected

More information

LAST Name (print) ALL WORK MUST BE SHOWN FOR THE FREE RESPONSE QUESTION IN ORDER TO RECEIVE FULL CREDIT.

LAST Name (print) ALL WORK MUST BE SHOWN FOR THE FREE RESPONSE QUESTION IN ORDER TO RECEIVE FULL CREDIT. Physics 107 LAST Name (print) First Mid-Term Exam FIRST Name (print) Summer 2013 Signature: July 5 UIN #: Textbooks, cell phones, or any other forms of wireless communication are strictly prohibited in

More information

Compiled and rearranged by Sajit Chandra Shakya

Compiled and rearranged by Sajit Chandra Shakya 1 (a) Define capacitance. [May/June 2005] 1...[1] (b) (i) One use of a capacitor is for the storage of electrical energy. Briefly explain how a capacitor stores energy......[2] (ii) Calculate the change

More information

General Physics (PHY 2140)

General Physics (PHY 2140) General Physics (PHY 2140) Lecture 5 Electrostatics Electrical energy potential difference and electric potential potential energy of charged conductors Capacitance and capacitors http://www.physics.wayne.edu/~apetrov/phy2140/

More information

PROBLEMS TO BE SOLVED IN CLASSROOM

PROBLEMS TO BE SOLVED IN CLASSROOM PROLEMS TO E SOLVED IN LSSROOM Unit 0. Prerrequisites 0.1. Obtain a unit vector perpendicular to vectors 2i + 3j 6k and i + j k 0.2 a) Find the integral of vector v = 2xyi + 3j 2z k along the straight

More information

Physics 2220 Fall 2010 George Williams SECOND MIDTERM - REVIEW PROBLEMS

Physics 2220 Fall 2010 George Williams SECOND MIDTERM - REVIEW PROBLEMS Physics 0 Fall 010 George Williams SECOND MIDTERM - REVIEW PROBLEMS The last four problems are from last years second midterm. Solutions are available on the class web site.. There are no solutions for,

More information

PHYS 241 EXAM #1 October 5, 2006

PHYS 241 EXAM #1 October 5, 2006 1. ( 5 points) Two point particles, one with charge 8 10 9 C and the other with charge 2 10 9 C, are separated by 4 m. The magnitude of the electric field (in N/C) midway between them is: A. 9 10 9 B.

More information

Name: Class: Date: Multiple Choice Identify the letter of the choice that best completes the statement or answers the question.

Name: Class: Date: Multiple Choice Identify the letter of the choice that best completes the statement or answers the question. Name: Class: _ Date: _ w9final Multiple Choice Identify the letter of the choice that best completes the statement or answers the question. 1. If C = 36 µf, determine the equivalent capacitance for the

More information

A) I B) II C) III D) IV E) V

A) I B) II C) III D) IV E) V 1. A square loop of wire moves with a constant speed v from a field-free region into a region of uniform B field, as shown. Which of the five graphs correctly shows the induced current i in the loop as

More information

A B C D E. 1 Two charges +Q and -3Q are placed in opposite corners of a square. The work required to move a test charge q from point A to point B is:

A B C D E. 1 Two charges +Q and -3Q are placed in opposite corners of a square. The work required to move a test charge q from point A to point B is: Slide 1 / 40 1 Two charges +Q and -3Q are placed in opposite corners of a square. The work required to move a test charge q from point to point is: dependent on the path taken from to directly proportional

More information

Phys222 S11 Quiz 2: Chapters Name: = 80 nc, and q = 24 nc in the figure, what is the magnitude of the total electric force on q?

Phys222 S11 Quiz 2: Chapters Name: = 80 nc, and q = 24 nc in the figure, what is the magnitude of the total electric force on q? Name: 1. Three point charges are positioned on the x axis. If the charges and corresponding positions are +3 µc at x = 0, +0 µc at x = 40 cm, and 60 µc at x = 60 cm, what is the magnitude of the electrostatic

More information

Ch. 16 and 17 Review Problems

Ch. 16 and 17 Review Problems Ch. 16 and 17 Review Problems NAME 1) Is it possible for two negative charges to attract each other? A) Yes, they always attract. B) Yes, they will attract if they are close enough. C) Yes, they will attract

More information

PHY 131 Review Session Fall 2015 PART 1:

PHY 131 Review Session Fall 2015 PART 1: PHY 131 Review Session Fall 2015 PART 1: 1. Consider the electric field from a point charge. As you move farther away from the point charge, the electric field decreases at a rate of 1/r 2 with r being

More information

JSR INSTITUTE (PHYSICS) XII ASSINGMENT 1 (CAPACITANCE)

JSR INSTITUTE (PHYSICS) XII ASSINGMENT 1 (CAPACITANCE) Physics J S R ESTD:007 JSR INSTITUTE (PHYSIS) XII ASSINGMENT (APAITANE). A capacitor of capacitance, which is initially charged up to a potential difference, is connected with a battery of emf / such that

More information

Properties of Capacitors and its DC Behavior

Properties of Capacitors and its DC Behavior LABORATORY Experiment 2 Properties of Capacitors and its DC Behavior 1. Objectives To investigate the /V characteristics of capacitor. To calculate the equivalent capacitance of capacitors connected in

More information

Capacitance, Resistance, DC Circuits

Capacitance, Resistance, DC Circuits This test covers capacitance, electrical current, resistance, emf, electrical power, Ohm s Law, Kirchhoff s Rules, and RC Circuits, with some problems requiring a knowledge of basic calculus. Part I. Multiple

More information

CLASS XII ELECTROSTATICS

CLASS XII ELECTROSTATICS PHYSICAL EDUCATION CLASS XII To do practice of specific game & develop skill. Answer the following questions:- UNIT- I a) Write type of tournament & explain. b) Draw know fixtures for number of teams-

More information

Taller de Electróstatica

Taller de Electróstatica Taller de Electróstatica TRUE/FALSE. Write 'T' if the statement is true and 'F' if the statement is false. 1) A neutron carries a negative charge. 1) 2) The coulomb, which is the unit of charge, is the

More information

Can current flow in electric shock?

Can current flow in electric shock? Can current flow in electric shock? Yes. Transient current can flow in insulating medium in the form of time varying displacement current. This was an important discovery made by Maxwell who could predict

More information

4) A 3.0 pf capacitor consists of two parallel plates that have surface charge densities of 1.0

4) A 3.0 pf capacitor consists of two parallel plates that have surface charge densities of 1.0 Quantitative 3) Two parallel plates are separated by 1.0 mm. If the potential difference between them is 2.0 V, what is the magnitude of their surface charge densities? A) 18 nc/m2 4) A 3.0 pf capacitor

More information

Capacitance. Chapter 21 Chapter 25. K = C / C o V = V o / K. 1 / Ceq = 1 / C / C 2. Ceq = C 1 + C 2

Capacitance. Chapter 21 Chapter 25. K = C / C o V = V o / K. 1 / Ceq = 1 / C / C 2. Ceq = C 1 + C 2 = Chapter 21 Chapter 25 Capacitance K = C / C o V = V o / K 1 / Ceq = 1 / C 1 + 1 / C 2 Ceq = C 1 + C 2 Copyright 25-2 Capacitance 25.01 Sketch a schematic diagram of a circuit with a parallel-plate capacitor,

More information

Capacitors And Dielectrics

Capacitors And Dielectrics 1 In this small e-book we ll learn about capacitors and dielectrics in short and then we ll have some questions discussed along with their solutions. I ll also give you a practices test series which you

More information

Physics 212 Spring 2009 Exam 2 Version C (832725)

Physics 212 Spring 2009 Exam 2 Version C (832725) Physics 212 Spring 2009 Exam 2 Version C (832725) Question 1 2 3 4 5 6 7 8 9 10 Instructions Be sure to answer every question. Follow the rules shown on the first page for filling in the Scantron form.

More information

FREE Download Study Package from website: &

FREE Download Study Package from website:  & EXERISE- * MARK IS MORE THAN ONE ORRET QUESTIONS. SETION A : DEFINITION OF APAIT ITANE A. A. When 0µ charge is given to an isolated conductor of capacitance 5µF. Find out following (i) Potential of the

More information

AP Physics C Electricity & Magnetism Mid Term Review

AP Physics C Electricity & Magnetism Mid Term Review AP Physics C Electricity & Magnetism Mid Term Review 1984 37. When lighted, a 100-watt light bulb operating on a 110-volt household circuit has a resistance closest to (A) 10-2 Ω (B) 10-1 Ω (C) 1 Ω (D)

More information

AP Physics C. Electric Circuits III.C

AP Physics C. Electric Circuits III.C AP Physics C Electric Circuits III.C III.C.1 Current, Resistance and Power The direction of conventional current Suppose the cross-sectional area of the conductor changes. If a conductor has no current,

More information

Student ID Number. Part I. Lecture Multiple Choice (43 points total)

Student ID Number. Part I. Lecture Multiple Choice (43 points total) Name Student ID Number Part I. Lecture Multiple Choice (43 points total). (5 pts.) The voltage between the cathode and the screen of a television set is 22 kv. If we assume a speed of zero for an electron

More information

Physics 112 Homework 2 (solutions) (2004 Fall) Solutions to Homework Questions 2

Physics 112 Homework 2 (solutions) (2004 Fall) Solutions to Homework Questions 2 Solutions to Homework Questions 2 Chapt16, Problem-1: A proton moves 2.00 cm parallel to a uniform electric field with E = 200 N/C. (a) How much work is done by the field on the proton? (b) What change

More information

Physics 420 Fall 2004 Quiz 1 Wednesday This quiz is worth 6 points. Be sure to show your work and label your final answers.

Physics 420 Fall 2004 Quiz 1 Wednesday This quiz is worth 6 points. Be sure to show your work and label your final answers. Quiz 1 Wednesday This quiz is worth 6 points. Be sure to show your work and label your final answers. 1. A charge q 1 = +5.0 nc is located on the y-axis, 15 µm above the origin, while another charge q

More information

1. Voltage is how much work is being done for a charge. 2. Lightning is the electric breakdown of air by weak electric fields and is a flow of energy.

1. Voltage is how much work is being done for a charge. 2. Lightning is the electric breakdown of air by weak electric fields and is a flow of energy. Chapters 17 and 18 Practice Problems True or False 1. Voltage is how much work is being done for a charge. 2. Lightning is the electric breakdown of air by weak electric fields and is a flow of energy.

More information

Phys102 Second Major-133 Zero Version Coordinator: A.A.Naqvi Tuesday, August 05, 2014 Page: 1

Phys102 Second Major-133 Zero Version Coordinator: A.A.Naqvi Tuesday, August 05, 2014 Page: 1 Coordinator: A.A.Naqvi Tuesday, August 05, 2014 Page: 1 Q1. igure 1 shows four situations in which a central proton (P) is surrounded by protons or electrons fixed in place along a half-circle. The angles

More information

Electric Potential Practice Problems

Electric Potential Practice Problems Electric Potential Practice Problems AP Physics Name Multiple Choice 1. A negative charge is placed on a conducting sphere. Which statement is true about the charge distribution (A) Concentrated at the

More information

TEAM MEMBERS. Sl. No. Name Designation. 1. Sh. Pundrikaksh Kaudinya Vice-Principal. 2. Sh. Kulbir Singh Antil P.G.T. (Physics) R.P.V.V.

TEAM MEMBERS. Sl. No. Name Designation. 1. Sh. Pundrikaksh Kaudinya Vice-Principal. 2. Sh. Kulbir Singh Antil P.G.T. (Physics) R.P.V.V. TEAM MEMBERS Sl. No. Name Designation 1. Sh. Pundrikaksh Kaudinya Vice-Principal Group Leader R.P.V.V., Kishan Ganj, Delhi-110007. Sh. Kulbir Singh Antil P.G.T. (Physics) Member R.P.V.V., Kishan Ganj,

More information

Phys2120 Spring 2017 Practice Exam 1. Chapters Name

Phys2120 Spring 2017 Practice Exam 1. Chapters Name Name 1. Two point charges are 4 cm apart. They are moved to a new separation of 2 cm. By what factor does the resulting mutual force between them change? 2. An uncharged conductor is supported by an insulating

More information

Capacitors. Charging a Capacitor. Charge and Capacitance. L05: Capacitors and Inductors

Capacitors. Charging a Capacitor. Charge and Capacitance. L05: Capacitors and Inductors L05: Capacitors and Inductors 50 Capacitors 51 Outline of the lecture: Capacitors and capacitance. Energy storage. Capacitance formula. Types of capacitors. Inductors and inductance. Inductance formula.

More information

STD : 12 TH GSEB PART A. 1. An electric dipole is placed in a uniform field. The resultant force acting on it...

STD : 12 TH GSEB PART A. 1. An electric dipole is placed in a uniform field. The resultant force acting on it... STD : 1 TH PHYSICS RJ VISION PVT. LTD. (MOST STABLE & INNOVATIVE INSTITUTE) GSEB COURSE NAME: 1 TH Total Marks : 100 Time : 3 hrs PART A Multiple Choice uestions : 1. An electric dipole is placed in a

More information

LESSON 2 PHYSICS NOTES

LESSON 2 PHYSICS NOTES LESSON 2 ELECTROSTATIC POTENTIAL AND CAPACITANCE SECTION I ELECTROSTATIC POTENTIAL ELECTRIC FIELD IS CONSERVATIVE In an electric field work done by the electric field in moving a unit positive charge from

More information

CHAPTER 18 ELECTRIC POTENTIAL

CHAPTER 18 ELECTRIC POTENTIAL CHAPTER 18 ELECTRIC POTENTIAL BASIC CONCEPTS: ELECTRIC POTENTIAL ENERGY ELECTRIC POTENTIAL ELECTRIC POTENTIAL GRADIENT POTENTIAL DIFFERENCE POTENTIAL ENERGY 1 h PE = U = mgh Or PE U KE K And U + K = total

More information

Physics Electricity & Op-cs Lecture 8 Chapter 24 sec Fall 2017 Semester Professor

Physics Electricity & Op-cs Lecture 8 Chapter 24 sec Fall 2017 Semester Professor Physics 24100 Electricity & Op-cs Lecture 8 Chapter 24 sec. 1-2 Fall 2017 Semester Professor Kol@ck How Much Energy? V 1 V 2 Consider two conductors with electric potentials V 1 and V 2 We can always pick

More information

Chapter 19 Electric Potential and Electric Field

Chapter 19 Electric Potential and Electric Field Chapter 19 Electric Potential and Electric Field The electrostatic force is a conservative force. Therefore, it is possible to define an electrical potential energy function with this force. Work done

More information

Homework. Reading: Chap. 29, Chap. 31 and Chap. 32. Suggested exercises: 29.17, 29.19, 29.22, 29.23, 29.24, 29.26, 29.27, 29.29, 29.30, 29.31, 29.

Homework. Reading: Chap. 29, Chap. 31 and Chap. 32. Suggested exercises: 29.17, 29.19, 29.22, 29.23, 29.24, 29.26, 29.27, 29.29, 29.30, 29.31, 29. Homework Reading: Chap. 29, Chap. 31 and Chap. 32 Suggested exercises: 29.17, 29.19, 29.22, 29.23, 29.24, 29.26, 29.27, 29.29, 29.30, 29.31, 29.32 Problems: 29.49, 29.51, 29.52, 29.57, 29.58, 29.59, 29.63,

More information

Physics 2B Winter 2012 Final Exam Practice

Physics 2B Winter 2012 Final Exam Practice Physics 2B Winter 2012 Final Exam Practice 1) When the distance between two charges is increased, the force between the charges A) increases directly with the square of the distance. B) increases directly

More information

is at the origin, and charge q μc be located if the net force on q

is at the origin, and charge q μc be located if the net force on q Term: 152 Saturday, April 09, 2016 Page: 1 Q1. Three point charges are arranged along the x-axis. Charge q 3.0 0 μc 1 is at the origin, and charge q 5.0 0 μc 2 is at x = 0.200 m. Where should a third charge

More information

4 pt. (in J) 3.A

4 pt. (in J) 3.A Mark Reeves - Physics 22, Fall 2011 1 A point charge of mass 0.0699 kg and charge q = +6.87 µc is suspended by a thread between the vertical parallel plates of a parallel-plate capacitor, as shown in the

More information

Physics 126 Fall 2004 Practice Exam 1. Answer will be posted about Oct. 5.

Physics 126 Fall 2004 Practice Exam 1. Answer will be posted about Oct. 5. Physics 126 Fall 2004 Practice Exam 1. Answer will be posted about Oct. 5. 1. Which one of the following statements best explains why tiny bits of paper are attracted to a charged rubber rod? A) Paper

More information

Electrostatic Potential and Capacitance Examples from NCERT Text Book

Electrostatic Potential and Capacitance Examples from NCERT Text Book Electrostatic Potential and Capacitance Examples from NCERT Text Book 1. (a) Calculate the potential at a point P due to a charge of 4 10 located 9 cm away. (b) Hence obtain the done in bringing a charge

More information

C = V Q. To find the capacitance of two conductors:

C = V Q. To find the capacitance of two conductors: Capacitance Capacitance is a measure of the ability of two conductors to store charge when a given potential difference is established between them. Two conductors, on one of which is charge +Q and on

More information

Electric Field of a uniformly Charged Thin Spherical Shell

Electric Field of a uniformly Charged Thin Spherical Shell Electric Field of a uniformly Charged Thin Spherical Shell The calculation of the field outside the shell is identical to that of a point charge. The electric field inside the shell is zero. What are the

More information

Electrostatics and Electric Potential - Outline

Electrostatics and Electric Potential - Outline Electrostatics and Electric Potential - Outline 1. Understand the basic properties of electric charge, including conservation of charge and that charges are quantized. 2. Differentiate between conductors

More information

Exam 1--PHYS 102--Spring 2013

Exam 1--PHYS 102--Spring 2013 ame: Class: Date: Exam 1--PHYS 102--Spring 2013 Multiple Choice Identify the choice that best completes the statement or answers the question. 1. A metallic object holds a charge of 3.8 10 6 C. What total

More information

Physics 196 Final Test Point

Physics 196 Final Test Point Physics 196 Final Test - 120 Point Name You need to complete six 5-point problems and six 10-point problems. Cross off one 5-point problem and one 10-point problem. 1. Two small silver spheres, each with

More information

c. They have electric charges that move freely d. Electrons are added to the rod a. charges are of unlike signs b. charges are of like signs

c. They have electric charges that move freely d. Electrons are added to the rod a. charges are of unlike signs b. charges are of like signs Physics Review Chapter 17 & 18 Name: Date: Period: 1. What sentence best characterizes electron conductors? a. They have low mass density b. They have high tensile strength c. They have electric charges

More information

Energy Stored in Capacitors

Energy Stored in Capacitors Energy Stored in Capacitors U = 1 2 qv q = CV U = 1 2 CV 2 q 2 or U = 1 2 C 37 Energy Density in Capacitors (1) We define the, u, as the electric potential energy per unit volume Taking the ideal case

More information

Chapter 2: Capacitors And Dielectrics

Chapter 2: Capacitors And Dielectrics hapter 2: apacitors And Dielectrics 2.1 apacitance and capacitors in series and parallel L.O 2.1.1 Define capacitance and use capacitance apacitor is a device that is capable of storing electric charges

More information

CHAPTER: 2 ELECTROSTATIC POTENTIAL AND CAPACITANCE

CHAPTER: 2 ELECTROSTATIC POTENTIAL AND CAPACITANCE CHAPTER: 2 ELECTROSTATIC POTENTIAL AND CAPACITANCE. Define electric potential at a point. *Electric potential at a point is efine as the work one to bring a unit positive charge from infinity to that point.

More information

Chapter 2: Capacitor And Dielectrics

Chapter 2: Capacitor And Dielectrics hapter 2: apacitor And Dielectrics In this chapter, we are going to discuss the different ways that a capacitor could be arranged in a circuit and how its capacitance could be increased. Overview apacitor

More information