ITL Public School First - Term( )
|
|
- Laura Paul
- 5 years ago
- Views:
Transcription
1 Date: 9/09/6 ITL Public School First - Term(06-7) Class: XII Physics(04) Answer key Time: hrs M. M: 70 SECTION-A An ac source of voltage V =V 0 sin ωt is connected to an ideal capacitor. Draw graphs and phasor diagram of voltage V and current I. Ans. Graph Phasor diagram The variation of potential difference V with length l in case of two potentiometers wires P and Q is as shown. Which one of these will you prefer for comparing emfs of two primary cells and why? Ans. Potentiometer Q Smaller k = V/l, greater sensitivity Define mobility of a charge carrier. How is the mobility affected with increase in temperature? Ans. Definition Mobility decreases 4 What is Meissner effect? Ans. The perfect diamagnetic behaviour shown by super conductors. 5 Why alloys like constantan and manganin are used for making standard resistors. Ans. (i) Resistance of alloys does not vary much with increase in temp. (ii) High Resistivity, so even a smaller length of material SECTION-B 6 Derive an expression for the energy stored in a parallel plate capacitor C, charged to a potential difference V. Ans. V = dw = V dq = dq W = = = If V is the final potential difference between capacitor plates, then Q = CV W = = = QV The work is stored as Electrostatic potential energy, U = QV 7 (i) How are infrared waves produced? Write their one important use. (ii) The thin Ozone layer on top of the stratosphere is crucial for human survival. Why? Ans. (i) They are produced by hot bodies and molecules. Any one use (ii) It absorbs harmful UV rays 8 Find the charge on the capacitor as shown in the circuit. Ans. Total resistance, R = = 0 The current, I = Potential difference, V = IR = 0 = A
2 Charge, q = CV = 6 = 4 μc. 9 Calculate the work done to dissociate the system of three charges placed on the vertices of an equilateral triangle with each side equal to 0cm. Ans. Potential energy of system i.e. work done to assemble the system of charges U = (00 ) = -. J Work done to dissociate the system of charges W = -U =. J 0 State Biot-Savart s law. Using this law, find an expression for the magnetic field at the centre of a circular coil of N-turns, radius r, carrying current I. Ans. Statement Derivation SECTION-C A thin metallic spherical shell of radius R carries a charge Q on its surface. A point charge is placed at the centre C and another charge +Q is placed outside the shell at A at a distance x from the centre as shown in figure. (i) Find the electric flux through the shell. (ii) State the law used. (iii) Find the force on the charge at the centre C of the shell and at the point A. Ans.(i) ϕ = Total charge enclosed = Q + Q/ = Q/ ϕ = Q/ (ii) Gauss law and statement (iii) = Calculate the equivalent capacitance between points A and B in the circuit below. If a battery of 0V is connected across A and B, calculate the charge drawn from the battery by the circuit. Ans. = This is the condition of balance so there will be no current across PQ (50 F) and are in series. C = 00/ = 0/ F C 4 = 50/5 = 0/ F Equivalent capacitance between A and B = 0/+0/ = 0 F A charge is distributed uniformly over a ring of radius a. Obtain an expression for the electric field intensity E at a point on the axis of the ring. Hence show that for points at large distances from the
3 ring, it behaves like a point charge. Ans. Derivation Result E = q/x 4 Using Ampere s circuital law, find an expression for the magnetic field at a point on the axis of a long solenoid with closely wound turns. Ans. Statement Expression for B = 0 n I 5 (i) When an AC source is connected to an ideal inductor show that the average power supplied by the source over a complete cycle is zero. (ii) A lamp is connected in series with an inductor and an AC source. What happens to the brightness of the lamp when the key is plugged in and an iron rod is inserted inside the inductor? Explain. Ans. (i) P av = EI cosϕ ϕ = / P av = 0 (ii) L increases due to which current decreases and brightness also decreases. 6 Define the term mutual inductance. Consider two concentric circular coils, one of radius r and the other of radius r (r < r ) placed coaxially which centres coinciding with each other. Obtain the expression for the mutual inductance of the arrangement. Ans. Definition Derivation for expression 7 How are electromagnetic waves produced by oscillating charges? Sketch a schematic diagram depicting electric and magnetic field for an electromagnetic wave propagating in the Z-direction. Ans. An oscillating charge produces an oscillating electric field in space, which produces an oscillating magnetic field. These regenerate each other and this results in the production of EM waves. Diagram OR Write Maxwell s generalization of Ampere s Circuital Law. Show that in the process of charging a capacitor, the current produced within the plates of the capacitor is i = ε 0 Where is the electric flux produced during charging of the capacitor plates. Ans. Amperes circuital law = μ 0 I c Explanation 8 (i) With the help of a neat and labeled diagram, explain the principle and working of a moving coil galvanometer. (ii) What is the function of uniform radial field and how is it produced? Ans. (i) Diagram Principle Working (ii) Function of Uniform radial field To have a linear scale It is produced by having a magnet with concave pole pieces.
4 9 (i) Write the expression for the magnetic force acting on a charged particle moving with velocity v in the presence of magnetic field B. (ii) A neutron, an electron and an alpha particle moving with equal velocities, enter a uniform magnetic field going into the plane of the paper as shown. Trace their paths in the field and justify your answer. Ans. (i) = q ( ) (ii) Direction of force will be according to FLHR. 0 (i) Define the term drift velocity. (ii) On the basis of electron drift, derive an expression for resistivity of a conductor in terms of number density of free electrons and relaxation time. On what factors does resistivity of a conductor depend? Ans. (i) Definition (ii) Derivation and Result = Factors affecting resistivity Name the parts of the electromagnetic spectrum which is (i) suitable for radar systems used in aircraft navigation. (ii) used to treat muscular strain. (iii) used as a diagnostic tool in medicine. Write in brief, how these waves can be produced. Arrange these spectrums in the ascending order of their wavelengths. Ans. (i) Microwaves (ii) Infrared (iii) X rays In ascending order X rays, IR and Microwaves Method of production A galvanometer of resistance G is converted into a voltmeter to measure upto V volts by connecting a resistance R in series with the coil. If a resistance R is connected in series with it, then it can measure upto V/ volts. Find the resistance, in terms of R and R, required to be connected to convert it into a voltmeter that can read upto V. Also find the resistance G of the galvanometer in terms of R and R. Ans. To measure V volts, V = I g (G + R ) V/ volts, V/ = I g (G + R ) V volts, V = I g (G + R ) Solving, R = R R SECTION-D Ram is a student of class X in a village school. His uncle gifted him a bicycle with a dynamo fitted in it. He was very excited to get it. While cycling during night, he could light the bulb and see the objects on the road. He, however, did not know how this device works. He asked the question to his teacher. The teacher considered it an opportunity to explain the working to the whole class. (i)write two values each displayed by Ram and his school teacher. (ii)state the principle on which a dynamo works. (iii)a circular coil of area 00 cm and 5 turns rotates about its vertical diameter with an angular speed of 40 s - in a uniform horizontal magnetic field of magnitude 0.05 T. Obtain the maximum voltage induced in the coil. Ans. (i) Ram Scientific aptitude, curiosity, positive approach Teacher Dedication, concern for students, motivational approach 4
5 (ii) Principle of dynamo/generator (iii) E 0 = NBAω =.5 V SECTION-E 4 (a) Draw a circuit diagram for a Wheatstone bridge. Use Kirchoff s rules to obtain the balance condition of the Wheatstone bridge. (b) In a meter bridge with R and S in the gaps, the null point is found at 40 cm from A. If resistance of 0Ω is connected in parallel with S, the null point at 50 cm from A. Determine the values of R and S. 5 Ans.(a) Circuit diagram Balance condition for a wheat stone bridge (b) First case l = 40 cm = = Second case S / = 0S/0+S R/S = 50/50 = S = R Solving R = 0 Ω and S = 5Ω OR (a) Deduce the expression for the torque acting on a dipole of dipole moment placed in a uniform electric field. Depict the direction of the torque. Express it in the vector form. (b) Show that the potential energy of a dipole making angle with the direction of the field is given by u ( ) = -.. Hence find out the amount of work done in rotating it from the position of unstable equilibrium to the stable equilibrium. Ans. (a) Fig Expression and direction of torque Vector form (b) potential energy of a dipole, U = - p. E Work done = - pe 5 (i) Draw a neat labeled diagram of a cyclotron. (ii) Show that time period of ions in cyclotron is independent of both the speed of ion and radius of circular path. What is the significance of this property? (iii) An electron after being accelerated through a potential difference of 00 V enters a uniform magnetic field of T perpendicular to its direction of motion. Calculate the radius of the path described by the electron. Ans. (i) Diagram (ii) T = The applied voltage is adjusted so that the polarity of dees is reversed in same time that it takes to complete one half of the revolution. (iii) r = mv/qb = /qb r = 8.4 X 0 - m 5
6 OR (i) Depict magnetic field lines due to two straight, long, parallel conductors carrying steady currents I and I in the same direction. (ii) Write the expression for the magnetic field produced by one of the conductor over the other. Deduce an expression for the force per unit length. (iii) Determine the direction of this force and define ampere. (iv)define the term magnetic inclination and horizontal component of Earth s magnetic field at a place. Establish the relationship between the two with the help of a diagram. Ans. (i) Diagram (ii) B = μ 0 I /πr ; f = F/L = μ 0 I I / πr N/m (iii) Definition of ampere and direction of force (iv) Definition of magnetic inclination and horizontal component of Earth s field H = B cos δ 6 (a) An ac source of voltage V = V 0 sin ωt is connected to a series combination of L, C and R. Use the phasor diagram to obtain expression for impedance of the circuit and phase angle between voltage and current. Find the condition when current will be in phase with the voltage. What is the circuit in this condition called? (b) In a series LR circuit X L = R and power factor of the circuit P. When capacitor with capacitance C such that X L =X C is put in series, the power factor becomes P. Calculate. 5 Ans. (a) Fig for LCR circuit Phasor diagram Expression for impedence Z and phase angle Condition for resonance (b) When X L = R Z = = = R P = cosϕ = R/Z = / When X L = X C, Z = R P = R/Z = R/R = P /P = / OR (i) Write the function of a transformer. State its principle of working with the help of a diagram. Mention various energy losses in this device. (ii) The primary coil of an ideal step-up transformer has 00 turns and transformation ratio is also 00. The input voltage and power are respectively 0V and 00W. Calculate (a) number of turns in secondary (b) current in primary (c) voltage across secondary (d) current in secondary (e) power in secondary Ans. (i) Transformer converse low voltage ac high voltage ac and viceversa Principle and diagram Energy losses (ii) (a) Ns = 0000 (b) I p = 5 A (c) V s = 000V (d) I s = 0.05 A (e) P s = 00 W
7 Answer key of set B Two wires one of copper and other of manganin have same resistance and equal length. Which wire is thicker and why? Ans. Manganin wire is thicker because R = l/a. If is more, A should be larger for same resistance. An ac source of voltage V =V 0 sin ωt is connected to an ideal inductor. Draw graphs and phasor diagram of voltage V and current I. Ans. Graph Phasor diagram 6 Derive an expression for the electrostatic potential on the axial line of an electric dipole. Ans. Derivation 5 (i) When an AC source is connected to an ideal capacitor, show that the average power supplied by the source over a complete cycle is zero. (ii) A lamp is connected in series with a variable capacitor and an AC source. What happens to the brightness of the lamp when the key is plugged in and capacitance of the capacitor is gradually reduced? Ans. (i) P av = EI cosϕ ϕ = / P av = 0 (ii) C increases due to which current decreases and brightness also decreases. 4 Using Ampere s circuital law. find an expression for the magnetic field due to a toroidal solenoid. Ans. Statement Expression for B = 0 n I 8 Define the term self inductance. Derive an expression for self inductance of a long air-cored solenoid of length l, cross-sectional area a and having number of turns N. Ans. Definition Derivation for expression
DEHRADUN PUBLIC SCHOOL I TERM ASSIGNMENT SUBJECT- PHYSICS (042) CLASS -XII
Chapter 1(Electric charges & Fields) DEHRADUN PUBLIC SCHOOL I TERM ASSIGNMENT 2016-17 SUBJECT- PHYSICS (042) CLASS -XII 1. Why do the electric field lines never cross each other? [2014] 2. If the total
More informationPHYSICS : CLASS XII ALL SUBJECTIVE ASSESSMENT TEST ASAT
PHYSICS 202 203: CLASS XII ALL SUBJECTIVE ASSESSMENT TEST ASAT MM MARKS: 70] [TIME: 3 HOUR General Instructions: All the questions are compulsory Question no. to 8 consist of one marks questions, which
More informationAISSCE 2016 EXPECTED (SURE SHORT) QUESTIONS WEIGHTAGE-WISE 2016
CLASS: XII AISSCE 2016 Subject: Physics EXPECTED (SURE SHORT) QUESTIONS WEIGHTAGE-WISE 2016 Q3 Section A ( 1 Mark ) A force F is acting between two charges placed some distances apart in vacuum. If a brass
More informationCBSE 12th Physics 2016 Unsolved Paper Delhi Board ARYAN INSTITUTE
CBSE 12th Physics 2016 Unsolved Paper Delhi Board CBSE 12th Physics 2016 Unsolved Paper Delhi Board TIME - 3HR. QUESTIONS - 26 THE MARKS ARE MENTIONED ON EACH QUESTION SECTION-A Q.1. A point charge +Q
More informationTHE INDIAN COMMUNITY SCHOOL, KUWAIT
THE INDIAN COMMUNITY SCHOOL, KUWAIT SERIES : I SE / 2016-2017 CODE : N 042 MAX. MARKS : 70 TIME ALLOWED : 3 HOURS NO. OF PAGES : 6 PHYSICS ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
More informationMass of neutron=1.675 X kg. SECTION-A
No. of printed pages:5 INDIAN SCHOOL SOHAR FIRST TERM EXAM- 2015 PHYSICS THEY CLASS: XII MARKS:70 DATE: 15 /9/2015 TIME:3hrs General Instructions: 1. All questions are compulsory. 2. There are 26 questions
More informationDELHI PUBLIC SCHOOL, BAHADURGARH Sample Paper 1 PHYSICS CLASS-XII Date- Duration:3hr
SET: 1 General Instructions:- DELHI PUBLIC SCHOOL, BAHADURGARH Sample Paper 1 PHYSICS CLASS-XII Date- Duration:3hr All questions are compulsory. There are 30 questions in total. Questions 1 to 8 carry
More informationCBSE QUESTION PAPER. PHYSICS (Theory)
CBSE QUESTION PAPER PHYSICS (Theory) Time allowed : 3 hours Maximum Marks : 70 General Instructions: (i) (ii) (iii) All questions are compulsory. There are 30 questions in total. Questions 1 to 8 carry
More informationKENDRIYA VIDYALAYA SANGATHAN, HYDERABAD REGION
KENDRIYA VIDYALAYA SANGATHAN, HYDERABAD REGION SAMPLE PAPER 04 (2017-18) SUBJECT: PHYSICS (043) BLUE PRINT : CLASS XII UNIT VSA (1 mark) SA - I (2 marks) SA II (3 marks) VBQ (4 marks) LA (5 marks) Total
More information1. Write the relation for the force acting on a charge carrier q moving with velocity through a magnetic field in vector notation. Using this relation, deduce the conditions under which this force will
More informationFIRST TERM EXAMINATION (07 SEPT 2015) Paper - PHYSICS Class XII (SET B) Time: 3hrs. MM: 70
FIRST TERM EXAMINATION (07 SEPT 205) Paper - PHYSICS Class XII (SET B) Time: 3hrs. MM: 70 Instructions:. All questions are compulsory. 2. Q.no. to 5 carry mark each. 3. Q.no. 6 to 0 carry 2 marks each.
More informationSure-shot questions for SA-2 (Class XII) Physics
Sure-shot questions for SA-2 (Class XII) Physics 1. Two point charges q and -2q are kept d distance apart. Find the location of the point relative to charge q at which potential due to this system of charges
More informationDownloaded 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 informationFREQUENTLY ASKED QUESTIONS SUBJECT-PHYSICS CLASS-XII SUNEEL KUMAR VISHWAKARMA PGT (PHYSICS)
FREQUENTLY ASKED QUESTIONS SUBJECT-PHYSICS CLASS-XII SUNEEL KUMAR VISHWAKARMA PGT (PHYSICS) K V NO.1 AFS CHAKERI KANPUR Suneel19761976@gmail.com Mobile No. 7523988747 SUNEEL KUMAR VISHWAKARMA PGT(PHYSICS)
More informationSENIOR_ 2017_CLASS_12_PHYSICS_ RAPID REVISION_1_ DERIVATIONS IN FIRST FIVE LESSONS Page 1
INDIAN SCHOOL MUSCAT Department of Physics Class XII Rapid Revision -1 DERIVATIONS IN FIRST FIVE LESSONS 1) Field due to an infinite long straight charged wire Consider an uniformly charged wire of infinite
More informationAP Physics C. Magnetism - Term 4
AP Physics C Magnetism - Term 4 Interest Packet Term Introduction: AP Physics has been specifically designed to build on physics knowledge previously acquired for a more in depth understanding of the world
More informationMAGNETIC PROBLEMS. (d) Sketch B as a function of d clearly showing the value for maximum value of B.
PHYS2012/2912 MAGNETC PROBLEMS M014 You can investigate the behaviour of a toroidal (dough nut shape) electromagnet by changing the core material (magnetic susceptibility m ) and the length d of the air
More informationCBSE XII Physics 2016
Time: 3 hours; Maximum Marks: 70 General Instructions: 1. All questions are compulsory. There are 26 questions in all. 2. This question paper has five sections: Section A, Section B, Section, Section D
More informationSample Question Paper (PHYSICS) CLASS-XII ( ) Time Allowed: 3Hours Maximum Marks: 70
Sample Question Paper (PHYSICS) CLASS-XII (2017-18) Time Allowed: 3Hours Maximum Marks: 70 General Instructions 1. All questions are compulsory. There are 26 questions in all. 2. This question paper has
More informationPlease write down the Serial Number of the question before attempting it. PHYSICS (Theory) Time allowed : 3 hours Maximum Marks : 70
Series ONS SET-1 Roll No. Candiates must write code on the title page of the answer book Please check that this question paper contains 16 printed pages. Code number given on the right hand side of the
More informationAP Physics C Mechanics Objectives
AP Physics C Mechanics Objectives I. KINEMATICS A. Motion in One Dimension 1. The relationships among position, velocity and acceleration a. Given a graph of position vs. time, identify or sketch a graph
More informationPHYSICS WORKSHEET CLASS : XII
PHYSICS WORKSHEET CLASS : XII Chapter 2 Topic: Electrostatic potential and Capacitance LEVEL 1 1. Define electric potential. Derive the expression for the electric potential at any point due to a point
More informationCBSE PHYSICS QUESTION PAPER (2005)
CBSE PHYSICS QUESTION PAPER (2005) (i) (ii) All questions are compulsory. There are 30 questions in total. Questions 1 to 8 carry one mark each, Questions 9 to 18 carry two marks each, Question 19 to 27
More informationMAGNETIC EFFECT OF CURRENT
MAGNETIC EFFECT OF CURRENT VERY SHORT ANSWER QUESTIONS Q.1 Who designed cyclotron? Q.2 What is the magnetic field at a point on the axis of the current element? Q.3 Can the path of integration around which
More informationCBSE Examination Paper
CBSE Examination Paper Time allowed : 3 hours Maximum marks: 70 General Instructions: Same as CBSE Examination Paper SET I 1. Using the concept of force between two infinitely long parallel current carrying
More informationMansfield Independent School District AP Physics C: Electricity and Magnetism Year at a Glance
Mansfield Independent School District AP Physics C: Electricity and Magnetism Year at a Glance First Six-Weeks Second Six-Weeks Third Six-Weeks Lab safety Lab practices and ethical practices Math and Calculus
More informationPhysics 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 informationSample Question Paper. Class XII -Physics. (Applicable for March 2016 Examination) Time Allowed: 3 Hours Maximum Marks: 70
Sample Question Paper Class XII -Physics (Applicable for March 2016 Examination) Time Allowed: 3 Hours Maximum Marks: 70 General Instructions 1. All questions are compulsory. There are 26 questions in
More information2. Q. 1 to 5 are Very short Answer type questions (1 Mark each. ) 3. Q. 6 to 12 are short Answer type questions. (2 Marks each. )
1. All questions are compulsory. 2. Q. 1 to 5 are Very short Answer type questions (1 Mark each. ) 3. Q. 6 to 12 are short Answer type questions. (2 Marks each. ) 4. Q. 13 to 24 are short answer questions
More informationPHYSICS ASSIGNMENT ES/CE/MAG. Class XII
PHYSICS ASSIGNMENT ES/CE/MAG Class XII MM : 70 1. What is dielectric strength of a medium? Give its value for vacuum. 1 2. What is the physical importance of the line integral of an electrostatic field?
More informationCBSE_2014_SET_3 Physics
CBSE_2014_SET_3 Physics 1. A conducting loop is held below a current carrying wire PQ as shown. Predict the direction of the induced current in the loop when the current in the wire is constantly increasing.
More informationGurgaon 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 informationChapter wise Theoretical Important Questions in Physics for. Class-XII. Electrostatics
Chapter wise Theoretical Important Questions in Physics for Class-XII Electrostatics 1. Derive an expression for the electric field at a point on the axial position of an electric dipole. 2. Derive an
More informationLouisiana State University Physics 2102, Exam 3 April 2nd, 2009.
PRINT Your Name: Instructor: Louisiana State University Physics 2102, Exam 3 April 2nd, 2009. Please be sure to PRINT your name and class instructor above. The test consists of 4 questions (multiple choice),
More informationChapter wise Theoretical Important Questions in Physics for Class-XII
Electrostatics- 1. Derive an expression for the electric field at a point on the axial position of an electric dipole. 2. Derive an expression for the electric field at a point on the equatorial position
More informationCLASS 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 informationSAMPLE PAPER III. Time : 3 hours Max. Marks : 70
SAMPLE PAPER III Time : 3 hours Max. Marks : 70 General Instructions All questions are compulsory. 1. Draw the equipotential surfaces for two point charges each of magnitude q > 0 placed at some finite
More informationAP Physics C. Electricity - Term 3
AP Physics C Electricity - Term 3 Interest Packet Term Introduction: AP Physics has been specifically designed to build on physics knowledge previously acquired for a more in depth understanding of the
More informationSESSION IMPORTANT QUESTIONS FOR CBSE EXAMINATION
SESSION 2012-2013 IMPORTANT QUESTIONS FOR CBSE EXAMINATION CLASS XII PHYSICS Very Important questions are marked in bold letters. Some NCERT questions are also mentioned. 1. A small test is released from
More informationUNIT I ELECTROSTATIC FIELDS
UNIT I ELECTROSTATIC FIELDS 1) Define electric potential and potential difference. 2) Name few applications of gauss law in electrostatics. 3) State point form of Ohm s Law. 4) State Divergence Theorem.
More informationSELAQUI 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 informationChapter 1: Electrostatics
1.1 Coulomb s law a) State Coulomb s law, Chapter 1: Electrostatics b) Sketch the electric force diagram and apply Coulomb s law for a system of point charges. 1.2 Electric field a) Define and use electric
More informationr where the electric constant
1.0 ELECTROSTATICS At the end of this topic, students will be able to: 10 1.1 Coulomb s law a) Explain the concepts of electrons, protons, charged objects, charged up, gaining charge, losing charge, charging
More informationQuestion Bank 4-Magnetic effects of current
Question Bank 4-Magnetic effects of current LEVEL A 1 Mark Questions 1) State Biot-Savart s law in vector form. 2) What is the SI unit of magnetic flux density? 3) Define Tesla. 4) A compass placed near
More informationCBSE XII Physics 2015
Time: 3 hours; Maximum Marks: 70 General Instructions: 1. All questions are compulsory. There are 26 questions in all. 2. This question paper has five sections: Section A, Section B, Section, Section D
More informationELECTRICITY AND MAGNETISM
ELECTRICITY AND MAGNETISM Chapter 1. Electric Fields 1.1 Introduction 1.2 Triboelectric Effect 1.3 Experiments with Pith Balls 1.4 Experiments with a Gold-leaf Electroscope 1.5 Coulomb s Law 1.6 Electric
More informationSample Question Paper 3 Class XII Physics
Sample Question Paper 3 Class XII Physics Time allowed: 3hrs Maximum Marks: 70 General Instructions: 1. All questions are compulsory. There are 26 questions in all. 2. This question paper has five sections:
More informationSet of sure shot questions of Magnetic effect of Current for class XII CBSE Board Exam Reg.
Set of sure shot questions of Magnetic effect of Current for class XII CBSE Board Exam. 2016- Reg. 1 Two Parallel Conducting wires carrying current in the same direction attract each other.why? I 1 A B
More informationPRE-BOARD EXAMINATION STD : XII MARKS : 150
PRE-BOARD EXAMINATION STD : XII MARKS : 150 SUB : PHYSICS TIME : 3.00 Hrs I.Choose the correct answer: 30x1=30 1.Which of the following quantities not a scalar? a)electric flux b) electric potential c)
More informationSol: Semiconductor diode.
48 49 1. What is the resistance value of a resistor of colour code Brown, Black, Red and silver? Sol: Brown-1, Black-0, Red-2, Silver- 10%. Resistance, R = 10 X 10-2 ±10Ω. 2. Mention a non-ohmic device.
More informationMARKING SCHEME SET 55/1/MT Q. No. Expected Answer / Value Points Marks Total Marks. Section A
MARKING SCHEME SET 55//MT Q. No. Expected Answer / Value Points Marks Total Marks Set,Q Set2,Q5 Set,Q4 Section A Set,Q2 Set2,Q4 Set,Q5 Set,Q Set2,Q2 Set,Q Set,Q4 Set2,Q Set,Q2 Set,Q5 Set2,Q Set,Q Set,Q6
More informationGeneral Instructions :
Class XII Subject - Physics General Instructions : 1. All questions are compulsory. 2. Q. 1 to 5 are Very short Answer type questions (1 Mark each. ) 3. Q. 6 to 12 are short Answer type questions. (2 Marks
More information5. You may use the following values of physical constants wherever necessary. Class XII Physics (042) Sample Question Paper
Class XII Physics (04) Sample Question Paper 018-19 Time allowed: hours. Max. Marks: 70 General Instructions: 1. All questions are compulsory. There are 7 questions in all.. This question paper has four
More information18 - ELECTROMAGNETIC INDUCTION AND ALTERNATING CURRENTS ( Answers at the end of all questions ) Page 1
( Answers at the end of all questions ) Page ) The self inductance of the motor of an electric fan is 0 H. In order to impart maximum power at 50 Hz, it should be connected to a capacitance of 8 µ F (
More informationc = m/s h = Js e = C µ 0 = 4 π 10 7 T ma l ε 0 = C 2 N 1 1 = N m 2 C 2 me = 9.
CLASS: XII SUBJECT: PHYSICS MAX. MARKS: 70 TIME: 3 Hours General Instructions: (i) All questions are compulsory. There are 2 questions in all. (ii) This question paper has five sections: Section A, Section
More informationPHYSICS Course Structure Units Topics Marks Electrostatics Current Electricity III Magnetic Effect of Current & Magnetism
PHYSICS Course Structure Units Topics Marks I Chapter 1 Chapter 2 II Chapter 3 III Chapter 4 Chapter 5 IV Chapter 6 Chapter 7 V Chapter 8 VI Chapter 9 Electrostatics Electric Charges and Fields Electrostatic
More informationPhysics for Scientists and Engineers 4th Edition 2017
A Correlation and Narrative Summary of Physics for Scientists and Engineers 4th Edition 2017 To the AP Physics C: Electricity and Magnetism Course Description AP is a trademark registered and/or owned
More informationPHYSICS 2005 (Delhi) Q3. The power factor of an A.C. circuit is 0.5. What will be the phase difference between voltage and current in this circuit?
General Instructions: 1. All questions are compulsory. 2. There is no overall choice. However, an internal choke has been pro vided in one question of two marks, one question of three marks and all three
More information3. How long will a radioactive isotope, whose half-life is T years, take for its activity to reduce to 1/8 th of its initial value?
No. of printed pages:5 INDIAN SCHOOL SOHAR SECOND TERM EXAM- 2014 PHYSICS THEY CLASS: XII MARKS:70 DATE: 1 /12/2014 TIME:3hrs General Instructions: 1. All questions are compulsory. 2. There are 26 questions
More informationUNIT II CURRENT ELECTRICITY
UNIT II CUENT ELECTICITY Weightage : 07 Marks Electric current; flow of electric charges in a metllic conductor, drift velocity, mobility and their relation with electric current. Ohm s law electrical
More informationKENDRIYA VIDYALAYA SANGATHAN, HYDERABAD REGION
KENDRIYA VIDYALAYA SANGATHAN, HYDERABAD REGION SAMPLE PAPER 1 (217-18) SUBJECT: PHYSICS (43) BLUE PRINT : CLASS XII UNIT VSA (1 mark) SA - I (2 marks) SA II (3 marks) VBQ (4 marks) LA (5 marks) Total I
More informationUNIT-I INTRODUCTION TO COORDINATE SYSTEMS AND VECTOR ALGEBRA
SIDDHARTH GROUP OF INSTITUTIONS :: PUTTUR Siddharth Nagar, Narayanavanam Road 517583 QUESTION BANK (DESCRIPTIVE) Subject with Code : EMF(16EE214) Sem: II-B.Tech & II-Sem Course & Branch: B.Tech - EEE Year
More informationSECTION-A. 2. How does the angle of minimum deviation of a glass prism vary, if the incident violet light is replaced with red light?
No. of printed pages:4 INDIAN SCHOOL SOHAR SECOND TERM EXAM- 2015 PHYSICS THEY CLASS: XII MARKS:70 DATE: 29 /11/2015 TIME:3hrs General Instructions: 1. All questions are compulsory. 2. There are 26 questions
More informationPHYSICS (Theory) Time Allowed: 3 hours Maximum Marks: 70
Sample Paper (CBSE) Series PHY/SP/1D Code No. SP/1-D PHYSICS (Theory) Time Allowed: hours Maximum Marks: 70 General Instructions: (i) (ii) (iii) (iv) (v) All questions are compulsory. This question paper
More informationCalculus Relationships in AP Physics C: Electricity and Magnetism
C: Electricity This chapter focuses on some of the quantitative skills that are important in your C: Mechanics course. These are not all of the skills that you will learn, practice, and apply during the
More informationInduction_P1. 1. [1 mark]
Induction_P1 1. [1 mark] Two identical circular coils are placed one below the other so that their planes are both horizontal. The top coil is connected to a cell and a switch. The switch is closed and
More informatione-edge Education Classes 1 of 41 website: , ,
ELETROSTATICS DELHI BOARD-2006 1. Define the term dielectric constant of a medium in terms of capacitance of a Capacitor [1] 2. The electric field and electric potential at any point due to a point charge
More informationPhysics 208, Spring 2016 Exam #3
Physics 208, Spring 206 Exam #3 A Name (Last, First): ID #: Section #: You have 75 minutes to complete the exam. Formulae are provided on an attached sheet. You may NOT use any other formula sheet. You
More informationPhysics 1308 Exam 2 Summer 2015
Physics 1308 Exam 2 Summer 2015 E2-01 2. The direction of the magnetic field in a certain region of space is determined by firing a test charge into the region with its velocity in various directions in
More informationwe can said that matter can be regarded as composed of three kinds of elementary particles; proton, neutron (no charge), and electron.
Physics II we can said that matter can be regarded as composed of three kinds of elementary particles; proton, neutron (no charge), and electron. Particle Symbol Charge (e) Mass (kg) Proton P +1 1.67
More informationName: 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 informationDescribe the forces and torques exerted on an electric dipole in a field.
Learning Outcomes - PHYS 2015 Electric charges and forces: Describe the electrical nature of matter; Explain how an object can be charged; Distinguish between electrical conductors and insulators and the
More informationKENDRIYA VIDYALAYA SANGATHAN, HYDERABAD REGION
KENDRIYA VIDYALAYA SANGATHAN, HYDERABAD REGION SAMPLE PAPER 03 (2017-18) SUBJECT: PHYSICS (043) BLUE PRINT : CLASS XII UNIT VSA (1 mark) SA - I (2 marks) SA II (3 marks) VBQ (4 marks) LA (5 marks) Total
More informationPractice Paper-3. Q. 2. An electron beam projected along + X-axis, in a magnetic field along the + Z-axis. What is
Practice Paper-3 Q. 1. An electric dipole of dipole moment 20 10 6 cm is enclosed by a closed surface. What is the net flux coming out of the surface? Q. 2. An electron beam projected along + X-axis, in
More informationPHYSICS PAPER 1 (THEORY)
PHYSICS PAPER 1 (THEORY) (Three hours) (Candidates are allowed additional 15 minutes for only reading the paper. They must NOT start writing during this time.) ---------------------------------------------------------------------------------------------------------------------
More informationELECTRO MAGNETIC FIELDS
SET - 1 1. a) State and explain Gauss law in differential form and also list the limitations of Guess law. b) A square sheet defined by -2 x 2m, -2 y 2m lies in the = -2m plane. The charge density on the
More informationPROBLEMS 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 informationELECTROMAGNETIC INDUCTION
ELECTROMAGNETIC INDUCTION 1. Magnetic Flux 2. Faraday s Experiments 3. Faraday s Laws of Electromagnetic Induction 4. Lenz s Law and Law of Conservation of Energy 5. Expression for Induced emf based on
More information60 IMPORTANT QUESTIONS OF PHYSICS-CLASS XII
60 IMPORTANT QUESTIONS OF PHYSICS-CLASS XII Q1. Plot a graph showing the variation of coulomb force (F) versed (1/r 2 ), where r is the distance between the two charges of each pair of charges (1µC, 2µC)
More informationNEW HORIZON PRE UNIVERSITY COLLEGE LESSON PLAN FOR THE ACADEMIC YEAR Department of PHYSICS (II PUC)
NEW HORIZON PRE UNIVERSITY COLLEGE LESSON PLAN FOR THE ACADEMIC YEAR 2017 2018 Department of PHYSICS (II PUC) Week Month: June 4 Electric charges and properties Coulomb s law superposition principle Electric
More informationClass XII- Physics - Assignment Topic: - Magnetic Effect of Current
LJPS Gurgaon 1. An electron beam projected along +X axis, experiences a force due to a magnetic field along +Y axis. What is the direction of the magnetic field? Class XII- Physics - Assignment Topic:
More informationPHYSICS. SGC Education center Pushpak Tutorial Super25 Concept. Roll No.
Roll No. Please check that this question paper contains 7 printed pages Please check that this question paper contains 26 questions. Please write down the Serial Number of the question before attempting
More informationPhysics 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 informationPHY 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 informationPhysics 102 Spring 2007: Final Exam Multiple-Choice Questions
Last Name: First Name: Physics 102 Spring 2007: Final Exam Multiple-Choice Questions 1. The circuit on the left in the figure below contains a battery of potential V and a variable resistor R V. The circuit
More informationCBSE Annual Examination Question Paper 2013
CBSE Annual Examination Question Paper 2013 PHYSICS (THEY) Time allowed: 3 hours] [Maximum marks: 70 General Instructions: (i) All questions are compulsory. (ii) There are 29 questions in total. Question
More informationMAGNETIC EFFECTS OF CURRENT AND MAGNETISM
UNIT III MAGNETIC EFFECTS OF CURRENT AND MAGNETISM Weightage 8 Marks Concept of magnetic field and Oersted s experiment Biot-savart law and its application to current carrying circular loop. Ampere s law
More informationCBSE Board Class XII Physics Set 1 Board Paper Time: 3 hours [Total Marks: 70]
CBSE Board Class XII Physics Set 1 Board Paper - 2009 Time: 3 hours [Total Marks: 70] General instructions: 1. All questions are compulsory. 2. There are 30 questions in total. Questions 1 to 8 are very
More informationMaharaja Agrasen Model School, PitamPura. SAMPLE QUESTION PAPER, Physics
Maharaja Agrasen Model School, PitamPura SAMPLE QUESTION PAPER, Physics MAX.MARKS- 70 TIME- 3 HOURS General Instructions: (i) All questions are compulsory. (ii) Question numbers 1 to 5 are very short answer
More informationPhysics 2220 Fall 2010 George Williams THIRD MIDTERM - REVIEW PROBLEMS
Physics 2220 Fall 2010 George Williams THIRD MIDTERM - REVIEW PROBLEMS Solution sets are available on the course web site. A data sheet is provided. Problems marked by "*" do not have solutions. 1. An
More informationINDIAN SCHOOL MUSCAT SENIOR SECTION DEPARTMENT OF PHYSICS CLASS XII CHAPTER 4 and 5 Magnetic Effects of Electric current and Magnetism WORKSHEET 4
INDIAN SCHOOL MUSCAT SENIOR SECTION DEPARTMENT OF PHYSICS CLASS XII CHAPTER 4 and 5 Magnetic Effects of Electric current and Magnetism WORKSHEET 4 SECTION A CONCEPTUAL AND APPLICATION TYPE QUESTIONS 1
More informationr where the electric constant
0. Coulomb s law a) Explain the concepts of electrons, protons, charged objects, charged up, gaining charge, losing charge, grounding and charge conservation. b) Describe the motion of point charges when
More informationUniversity of the Philippines College of Science PHYSICS 72. Summer Second Long Problem Set
University of the Philippines College of Science PHYSICS 72 Summer 2012-2013 Second Long Problem Set INSTRUCTIONS: Choose the best answer and shade the corresponding circle on your answer sheet. To change
More informationELECTRICITY AND MAGNETISM, A. C. THEORY AND ELECTRONICS, ATOMIC AND NUCLEAR PHYSICS
UNIT 2: ELECTRICITY AND MAGNETISM, A. C. THEORY AND ELECTRONICS, ATOMIC AND NUCLEAR PHYSICS MODULE 1: ELECTRICITY AND MAGNETISM GENERAL OBJECTIVES On completion of this Module, students should: 1. understand
More informationb) (4) How large is the current through the 2.00 Ω resistor, and in which direction?
General Physics II Exam 2 - Chs. 19 21 - Circuits, Magnetism, EM Induction - Sep. 29, 2016 Name Rec. Instr. Rec. Time For full credit, make your work clear. Show formulas used, essential steps, and results
More information7. 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 informationVery short Answer type Questions [1 mark each]
Very short Answer type Questions [1 mark each] 1. Why must electrostatic field at the surface of a charged conductor be normal to the surface at every point? Give reason. 2. What is meant by the statement
More informationYell if you have any questions
Class 31: Outline Hour 1: Concept Review / Overview PRS Questions possible exam questions Hour : Sample Exam Yell if you have any questions P31 1 Exam 3 Topics Faraday s Law Self Inductance Energy Stored
More informationClass XII Physics (Theory)
DATE : 0/03/209 SET-3 Code No. //3 Regd. Office : Aakash Tower, 8, Pusa Road, New Delhi-000. Ph.: 0-4762346 Class XII Physics (Theory) Time : 3 Hrs. Max. Marks : 70 (CBSE 209) GENERAL INSTRUCTIONS :. All
More informationExam 2 Solutions. Note that there are several variations of some problems, indicated by choices in parentheses.
Exam 2 Solutions Note that there are several variations of some problems, indicated by choices in parentheses. Problem 1 Part of a long, straight insulated wire carrying current i is bent into a circular
More information