Physics 2020, Spring 2005 Lab 5 page 1 of 8. Lab 5. Magnetism
|
|
- Ferdinand Dixon
- 6 years ago
- Views:
Transcription
1 Physics 2020, Sping 2005 Lab 5 page 1 of 8 Lab 5. Magnetism PART I: INTRODUCTION TO MAGNETS This week we will begin wok with magnets and the foces that they poduce. By now you ae an expet on setting up cicuits, and we will look at the inteaction between magnetic fields and flowing cuent. The goals of this lab ae to see how magnetism is ceated by and acts on electical cuents, to lean two ways to use the ight-hand ule in magnetism, and to see some eal-wold examples of magnetism. Magnetic fields ae caused by moving chages sometimes by chages moving on the atomic level (electons moving aound atomic nuclei, fo example), and sometimes moving on a macoscopic scale, such as though the wies in an odinay cicuit. Similaly to how electic fields ae both poduced by and act on chaged paticles, magnetic fields ae both poduced by and act on moving chages. The unit of measuement of magnetic field is the Tesla (the eath s magnetic field is about Tesla, and a efigeato magnet ceates a field of about 0.01 Tesla). 1 Tesla = 1 T = 1 N / (A*m) In this lab you will be using ba magnets as the souce of the magnetic field. The ba magnets each have two poles (Noth and South), but they ae not labeled. Once you detemine which end of the magnet is Noth and which is South, be sue to keep tack of it! IMPORTANT: The convention fo magnetic field lines is that they point away fom a magnetic Noth pole, and towads a magnetic South pole (analogous to how electic field lines point away fom positive chages and towads negative chages). Pedict what the magnetic field stuctue would be aound this ba magnet. Daw in 10 o so magnetic field lines. Pedict which way a compass would point in the field of this magnet. In each of the cicles, daw an aow in the diection that a compass should point. Univesity of Coloado at Boulde, Depatment of Physics
2 Physics 2020, Sping 2005 Lab 5 page 2 of 8 Using the compass, measue the diection of the field lines nea the tips of you ba magnet. NOTE that the coloed compass tip points along the magnetic field diection. Does the geneal shape match you pediction? Can you detemine which end of you magnet is Noth and which is South? The ion coe of the eath acts like a giant ba magnet. Given that the compass needle (which points towads the geogaphic noth), points along the magnetic field lines, daw in the magnetic field lines suounding the eath. Once you have done this, label the magnetic poles of the giant magnet in the eath. PART II: MAGNETIC FIELD PRODUCED BY A CURRENT Given a magnet that is fee to otate in an extenal magnetic field, which way will it line itself up? Daw you answe below (i.e. daw the field lines, and daw the final position of the magnet with the poles labeled). The situation that you dew is exactly how a compass woks namely, a compass is just a feely-otating little magnet which aligns itself with any extenal fields. Univesity of Coloado at Boulde, Depatment of Physics
3 Physics 2020, Sping 2005 Lab 5 page 3 of 8 As mentioned above, magnetic fields ae also poduced by moving cuent. The diection of the magnetic field aound a cuent-caying wie can be detemined by the ight-hand ule. Namely, if you point you thumb in the diection of the cuent, you finges will cul in the diection of the magnetic field lines which suound the cuent. At you table, you should have the pieces to constuct a tapeze setup simila to the pictue below. NOTE: Afte you ae done with each measuement, disconnect the battey! The tapeze should be set up to swing feely be caeful that thee is no pessue on the joints that will keep it fom moving. On the figue, daw the diection of the cuent. Using the figue above, pedict and daw the diection of the magnetic field lines in the vicinity of the upwad-leg of the tapeze. The fou disks in the pictue ae supposed to epesent little compasses -- daw in the compass needles fo the fou compasses. Connect the cicuit and use you compass to check you pediction wee you coect? If not, why not? Univesity of Coloado at Boulde, Depatment of Physics
4 Physics 2020, Sping 2005 Lab 5 page 4 of 8 PART III: FORCE ON A CURRENT IN A MAGNETIC FIELD As mentioned in pat I, magnetic fields poduce a foce on any moving chage. This can be obseved in the lab by moving chages though a wie (i.e. with an electical cuent). The foce on a cuent-caying wie in a magnetic field is given by F = IL! B whee F is the foce on the wie, I is the cuent, L is the length, and B is the magnetic field. Notice that F, L, and B ae all vectos, and the! sign indicates a specific kind of vecto multiplication called the coss poduct. To figue out just the magnitude of the foce, you can use the fomula F = ILB sin (! ) whee! is the angle between the cuent / length diection and the magnetic field diection. Fo example, if the cuent is pependicula to the magnetic field, θ=90 and sin(θ)=1, so the magnitude of the foce just equals ILB. Notice that if the cuent is doubled, the foce is doubled. Notice also that if the magnetic field stength is doubled, the foce is doubled. Notice also that if the length of wie is doubled, the foce is doubled. In othe wods, the foce has a linea dependence on each of the vaiables I, L, and B. If a 5 cm long wie caying 2 amps is paallel to the magnetic field lines of a 0.1 Tesla field, what is the foce on the wie? Make a sketch to go with you answe. To figue out the diection of the vecto that esults fom a coss-poduct, you need to use the ighthand ule (note that this is the second way we use the ight-hand ule fo magnetism). To use the ight-hand ule, aim you finges towads the fist vecto in the coss poduct ( L, which is taken to be the cuent diection) then cul you finges in the diection of the second vecto in the coss poduct ( B ). Now extend you thumb, which will point in the diection of the coss-poduct ( F ). Univesity of Coloado at Boulde, Depatment of Physics
5 Physics 2020, Sping 2005 Lab 5 page 5 of 8 In the figue below, the magnetic field lines point into the page (as indicated by the little cicle with the coss in it that symbol is supposed to epesent the view of an aow shooting away fom you). Cuent is unning though the cicuit as indicated by the aows on the ectangula wie. On each side of the cicuit, daw an aow epesenting the diection of the foce (use the ight-hand-ule to figue out the diection). If this wie wee flexible, what would happen to it? Repeat the pevious poblem with the figue below, which is simila except that the cuent is now going in the opposite diection. If this wie wee flexible, what would happen to it? Univesity of Coloado at Boulde, Depatment of Physics
6 Physics 2020, Sping 2005 Lab 5 page 6 of 8 On the figue below, daw the diection of the cuent. The figue below is a zoom-in of the bottom of the tapeze as the end of the ba magnet is moved close to the tapeze. Re-daw the cuent diection, and now daw in the magnetic field lines fom the ba magnet. Which way will the tapeze swing? (Will it swing at all?) Hook up the cicuit and ty the expeiment. Is you pediction coect? If not, why not? Univesity of Coloado at Boulde, Depatment of Physics
7 Physics 2020, Sping 2005 Lab 5 page 7 of 8 Pedict what would happen if the othe end of the magnet wee used, then check you pediction wee you coect? If not, why not? Pedict what would happen if the battey was connected in the othe diection, then check you pediction wee you coect? If not, why not? PART IV: PUTTING IT ALL TOGETHER Imagine you have a flexible wie with cuent unning though it, bent into a kink as shown below. The cuent in each side of the kink will poduce a magnetic field which acts on the cuent flowing though the othe side. Will these foces kink the wie up moe o un-kink the wie? Univesity of Coloado at Boulde, Depatment of Physics
8 Physics 2020, Sping 2005 Lab 5 page 8 of 8 POTENTIAL EXAM QUESTIONS: 1. Which of the following statements is tue? a) Two wies caying paallel cuent ae epelled fom each othe because the electons in each wie epel the electons in the othe wie. b) Two wies caying paallel cuent ae attacted to each othe because the magnetic field poduced by each wie attacts the cuent in the othe wie. c) Two wies caying anti-paallel cuent ae attacted to each othe because the magnetic field poduced by each wie attacts the cuent in the othe wie. d) Two wies caying anti-paallel cuent exet no foce on each othe because thei magnetic fields cancel. e) Two wies caying paallel cuent exet no foce on each othe because thei magnetic fields cancel. 2. Shown below ae six configuations of fou cuent-caying wies viewed end on. Each cicle with a dot epesents cuent coming out of the page, and each cicle with a coss epesents cuent flowing into the page. Each wie caies the same amount of cuent. What is the ode of net magnetic field magnitude at the cente of each squae? a) A > D > C = E > F > B b) A = B > D = F > C = E c) D > F > E > C > A = B d) E > D = F > A = B = C e) C = E > D = F > A = B Univesity of Coloado at Boulde, Depatment of Physics
MAGNETIC FIELD INTRODUCTION
MAGNETIC FIELD INTRODUCTION It was found when a magnet suspended fom its cente, it tends to line itself up in a noth-south diection (the compass needle). The noth end is called the Noth Pole (N-pole),
More information16.1 Permanent magnets
Unit 16 Magnetism 161 Pemanent magnets 16 The magnetic foce on moving chage 163 The motion of chaged paticles in a magnetic field 164 The magnetic foce exeted on a cuent-caying wie 165 Cuent loops and
More informationHow Electric Currents Interact with Magnetic Fields
How Electic Cuents nteact with Magnetic Fields 1 Oested and Long Wies wote these notes to help ou with vaious diectional ules, and the equivalence between the magnetism of magnets and the magnets of electic
More informationPhysics 11 Chapter 20: Electric Fields and Forces
Physics Chapte 0: Electic Fields and Foces Yesteday is not ous to ecove, but tomoow is ous to win o lose. Lyndon B. Johnson When I am anxious it is because I am living in the futue. When I am depessed
More informationPhysics 2B Chapter 22 Notes - Magnetic Field Spring 2018
Physics B Chapte Notes - Magnetic Field Sping 018 Magnetic Field fom a Long Staight Cuent-Caying Wie In Chapte 11 we looked at Isaac Newton s Law of Gavitation, which established that a gavitational field
More informationA moving charged particle creates a magnetic field vector at every point in space except at its position.
1 Pat 3: Magnetic Foce 3.1: Magnetic Foce & Field A. Chaged Paticles A moving chaged paticle ceates a magnetic field vecto at evey point in space ecept at its position. Symbol fo Magnetic Field mks units
More informationForce between two parallel current wires and Newton s. third law
Foce between two paallel cuent wies and Newton s thid law Yannan Yang (Shanghai Jinjuan Infomation Science and Technology Co., Ltd.) Abstact: In this pape, the essence of the inteaction between two paallel
More informationPhysics 2112 Unit 14
Physics 2112 Unit 14 Today s Concept: What Causes Magnetic Fields d 0I ds ˆ 2 4 Unit 14, Slide 1 You Comments Can you give a summay fo eveything we use the ight hand ule fo? Wasn't too clea on this topic.
More informationLast time RC circuits. Exam 2 is Tuesday Oct. 27 5:30-7 pm, Birge 145. Magnetic force on charged particle. Magnetic force on electric charges
Eam is Tuesda Oct. 7 5:0-7 pm, ige 45 Last time RC cicuits Students w / scheduled academic conflict please sta afte class TODAY to aange altenate time. Coes: all mateial since eam ook sections: Chap 7,
More informationPhysics Spring 2012 Announcements: Mar 07, 2012
Physics 00 - Sping 01 Announcements: Ma 07, 01 HW#6 due date has been extended to the moning of Wed. Ma 1. Test # (i. Ma ) will cove only chaptes 0 and 1 All of chapte will be coveed in Test #4!!! Test
More informationHW #5 Hints. Today. HW #5 Hints. HW #5 Hints. Announcements:
Today HW #5 Hints Announcements: HW and Exta cedit #3 due 2/25 HW hints + Recap the 2nd law of themodynamics Electic and Magnetic Foces and thei unification the Foce Field concept -1-1) The speed at D
More informationPhysics NYB problem set 5 solution
Physics NY poblem set 5 solutions 1 Physics NY poblem set 5 solution Hello eveybody, this is ED. Hi ED! ED is useful fo dawing the ight hand ule when you don t know how to daw. When you have a coss poduct
More informationCh 30 - Sources of Magnetic Field! The Biot-Savart Law! = k m. r 2. Example 1! Example 2!
Ch 30 - Souces of Magnetic Field 1.) Example 1 Detemine the magnitude and diection of the magnetic field at the point O in the diagam. (Cuent flows fom top to bottom, adius of cuvatue.) Fo staight segments,
More informationMTE2 Wed 26, at 5:30-7:00 pm Ch2103 and SH 180. Contents of MTE2. Study chapters (no 32.6, 32.10, no 32.8 forces between wires)
MTE Wed 6, at 5:30-7:00 pm Ch03 and SH 80 Contents of MTE Wok of the electic foce and potential enegy Electic Potential and ield Capacitos and capacitance Cuent and esistance, Ohm s la DC Cicuits and Kichoff
More information21 MAGNETIC FORCES AND MAGNETIC FIELDS
CHAPTER 1 MAGNETIC ORCES AND MAGNETIC IELDS ANSWERS TO OCUS ON CONCEPTS QUESTIONS 1. (d) Right-Hand Rule No. 1 gives the diection of the magnetic foce as x fo both dawings A and. In dawing C, the velocity
More information2/26/2014. Magnetism. Chapter 20 Topics. Magnets and Magnetic Fields. Magnets and Magnetic Fields. Magnets and Magnetic Fields
Magnets and Magnetic ields Magnetism Howee, if you cut a magnet in half, you don t get a noth pole and a south pole you get two smalle magnets. ectue otes Chapte 20 Topics Magnets and Magnetic ields Magnets
More informationCalculate the electric potential at B d2=4 m Calculate the electric potential at A d1=3 m 3 m 3 m
MTE : Ch 13 5:3-7pm on Oct 31 ltenate Exams: Wed Ch 13 6:3pm-8:pm (people attending the altenate exam will not be allowed to go out of the oom while othes fom pevious exam ae still aound) Thu @ 9:-1:3
More informationFlux. Area Vector. Flux of Electric Field. Gauss s Law
Gauss s Law Flux Flux in Physics is used to two distinct ways. The fist meaning is the ate of flow, such as the amount of wate flowing in a ive, i.e. volume pe unit aea pe unit time. O, fo light, it is
More informationPHY 213. General Physics II Test 2.
Univesity of Kentucky Depatment of Physics an Astonomy PHY 3. Geneal Physics Test. Date: July, 6 Time: 9:-: Answe all questions. Name: Signatue: Section: Do not flip this page until you ae tol to o so.
More informationCharges, Coulomb s Law, and Electric Fields
Q&E -1 Chages, Coulomb s Law, and Electic ields Some expeimental facts: Expeimental fact 1: Electic chage comes in two types, which we call (+) and (). An atom consists of a heavy (+) chaged nucleus suounded
More informationSparks. From Last Time. Other electric currents. Time-varying electric current. Eventually transatlantic signals! Electric Charge
Electic Chage Fom Last Time Two types: plus and minus Foces between chages Like chages epel, opposite chages attact Coulomb s law: foce dops invesely w/ squae of distance Electic Cuent Flow of chages fom
More informationPHYSICS 272 Electric & Magnetic Interactions
PHYS 7: Matte and Inteactions II -- Electic And Magnetic Inteactions http://www.physics.pudue.edu/academic_pogams/couses/phys7/ PHYSICS 7 Electic & Magnetic Inteactions Lectue 3 Chaged Objects; Polaization
More informationObjectives: After finishing this unit you should be able to:
lectic Field 7 Objectives: Afte finishing this unit you should be able to: Define the electic field and explain what detemines its magnitude and diection. Wite and apply fomulas fo the electic field intensity
More informationPY208 Matter & Interactions Final Exam S2005
PY Matte & Inteactions Final Exam S2005 Name (pint) Please cicle you lectue section below: 003 (Ramakishnan 11:20 AM) 004 (Clake 1:30 PM) 005 (Chabay 2:35 PM) When you tun in the test, including the fomula
More information( ) Make-up Tests. From Last Time. Electric Field Flux. o The Electric Field Flux through a bit of area is
Mon., 3/23 Wed., 3/25 Thus., 3/26 Fi., 3/27 Mon., 3/30 Tues., 3/31 21.4-6 Using Gauss s & nto to Ampee s 21.7-9 Maxwell s, Gauss s, and Ampee s Quiz Ch 21, Lab 9 Ampee s Law (wite up) 22.1-2,10 nto to
More informationElectric Field. y s +q. Point charge: Uniformly charged sphere: Dipole: for r>>s :! ! E = 1. q 1 r 2 ˆr. E sphere. at <0,r,0> at <0,0,r>
Electic Field Point chage: E " ˆ Unifomly chaged sphee: E sphee E sphee " Q ˆ fo >R (outside) fo >s : E " s 3,, at z y s + x Dipole moment: p s E E s "#,, 3 s "#,, 3 at
More informationChapter 4. Newton s Laws of Motion
Chapte 4 Newton s Laws of Motion 4.1 Foces and Inteactions A foce is a push o a pull. It is that which causes an object to acceleate. The unit of foce in the metic system is the Newton. Foce is a vecto
More informationSources of Magnetic Fields (chap 28)
Souces of Magnetic Fields (chap 8) In chapte 7, we consideed the magnetic field effects on a moving chage, a line cuent and a cuent loop. Now in Chap 8, we conside the magnetic fields that ae ceated by
More informationPHY 114 A General Physics II 11 AM-12:15 PM TR Olin 101
PHY 114 A Geneal Physics II 11 AM-1:15 PM TR Olin 11 Plan fo Lectue 1 Chaptes 3): Souces of Magnetic fields 1. Pemanent magnets.biot-savat Law; magnetic fields fom a cuent-caying wie 3.Ampee Law 4.Magnetic
More informationMagnetic fields (origins) CHAPTER 27 SOURCES OF MAGNETIC FIELD. Permanent magnets. Electric currents. Magnetic field due to a moving charge.
Magnetic fields (oigins) CHAPTER 27 SOURCES OF MAGNETC FELD Magnetic field due to a moving chage. Electic cuents Pemanent magnets Magnetic field due to electic cuents Staight wies Cicula coil Solenoid
More information7.2. Coulomb s Law. The Electric Force
Coulomb s aw Recall that chaged objects attact some objects and epel othes at a distance, without making any contact with those objects Electic foce,, o the foce acting between two chaged objects, is somewhat
More informationMagnetic Dipoles Challenge Problem Solutions
Magnetic Dipoles Challenge Poblem Solutions Poblem 1: Cicle the coect answe. Conside a tiangula loop of wie with sides a and b. The loop caies a cuent I in the diection shown, and is placed in a unifom
More informationBetween any two masses, there exists a mutual attractive force.
YEAR 12 PHYSICS: GRAVITATION PAST EXAM QUESTIONS Name: QUESTION 1 (1995 EXAM) (a) State Newton s Univesal Law of Gavitation in wods Between any two masses, thee exists a mutual attactive foce. This foce
More informationEventually transatlantic signals! From Last Time. Electromagnetic Waves. The idea of electric fields. The electric field.
Fom Last Time Electomagnetic waves Chages, cuent and foces: Coulomb s law. Acceleating chages poduce an electomagnetic wave The idea of the electic field. Today Electic fields, magnetic fields, and thei
More informationCurrent Balance Warm Up
PHYSICS EXPERIMENTS 133 Cuent Balance-1 Cuent Balance Wam Up 1. Foce between cuent-caying wies Wie 1 has a length L (whee L is "long") and caies a cuent I 0. What is the magnitude of the magnetic field
More informationUnit 7: Sources of magnetic field
Unit 7: Souces of magnetic field Oested s expeiment. iot and Savat s law. Magnetic field ceated by a cicula loop Ampèe s law (A.L.). Applications of A.L. Magnetic field ceated by a: Staight cuent-caying
More informationModule 18: Outline. Magnetic Dipoles Magnetic Torques
Module 18: Magnetic Dipoles 1 Module 18: Outline Magnetic Dipoles Magnetic Toques 2 IA nˆ I A Magnetic Dipole Moment μ 3 Toque on a Cuent Loop in a Unifom Magnetic Field 4 Poblem: Cuent Loop Place ectangula
More informationOSCILLATIONS AND GRAVITATION
1. SIMPLE HARMONIC MOTION Simple hamonic motion is any motion that is equivalent to a single component of unifom cicula motion. In this situation the velocity is always geatest in the middle of the motion,
More informationConventional Current B = In some materials current moving charges are positive: Ionic solution Holes in some materials (same charge as electron but +)
Conventional Cuent In some mateials cuent moving chages ae positive: Ionic solution Holes in some mateials (same chage as electon but +) Obseving magnetic field aound coppe wie: Can we tell whethe the
More informationPHYSICS 151 Notes for Online Lecture #36
Electomagnetism PHYSICS 151 Notes fo Online Lectue #36 Thee ae fou fundamental foces in natue: 1) gavity ) weak nuclea 3) electomagnetic 4) stong nuclea The latte two opeate within the nucleus of an atom
More informationElectric Charge and Field
lectic Chage and ield Chapte 6 (Giancoli) All sections ecept 6.0 (Gauss s law) Compaison between the lectic and the Gavitational foces Both have long ange, The electic chage of an object plas the same
More informationPhys-272 Lecture 17. Motional Electromotive Force (emf) Induced Electric Fields Displacement Currents Maxwell s Equations
Phys-7 Lectue 17 Motional Electomotive Foce (emf) Induced Electic Fields Displacement Cuents Maxwell s Equations Fom Faaday's Law to Displacement Cuent AC geneato Magnetic Levitation Tain Review of Souces
More informationMagnetic Field. Conference 6. Physics 102 General Physics II
Physics 102 Confeence 6 Magnetic Field Confeence 6 Physics 102 Geneal Physics II Monday, Mach 3d, 2014 6.1 Quiz Poblem 6.1 Think about the magnetic field associated with an infinite, cuent caying wie.
More informationChapter 28: Magnetic Field and Magnetic Force. Chapter 28: Magnetic Field and Magnetic Force. Chapter 28: Magnetic fields. Chapter 28: Magnetic fields
Chapte 8: Magnetic fiels Histoically, people iscoe a stone (e 3 O 4 ) that attact pieces of ion these stone was calle magnets. two ba magnets can attact o epel epening on thei oientation this is ue to
More informationThe Millikan Experiment: Determining the Elementary Charge
LAB EXERCISE 7.5.1 7.5 The Elementay Chage (p. 374) Can you think of a method that could be used to suggest that an elementay chage exists? Figue 1 Robet Millikan (1868 1953) m + q V b The Millikan Expeiment:
More informationElecto Magnetism iot Savat s Law and Ampee s Cicuital Law 1. A cuent is flowing due noth along a powe line. The diection of the magnetic field above it, neglecting the eath s field is: (1) Noth () East
More informationExam 3, vers Physics Spring, 2003
1 of 9 Exam 3, ves. 0001 - Physics 1120 - Sping, 2003 NAME Signatue Student ID # TA s Name(Cicle one): Michael Scheffestein, Chis Kelle, Paisa Seelungsawat Stating time of you Tues ecitation (wite time
More informationPhysics 235 Chapter 5. Chapter 5 Gravitation
Chapte 5 Gavitation In this Chapte we will eview the popeties of the gavitational foce. The gavitational foce has been discussed in geat detail in you intoductoy physics couses, and we will pimaily focus
More informationPhysics 121: Electricity & Magnetism Lecture 1
Phsics 121: Electicit & Magnetism Lectue 1 Dale E. Ga Wenda Cao NJIT Phsics Depatment Intoduction to Clices 1. What ea ae ou?. Feshman. Sophomoe C. Junio D. Senio E. Othe Intoduction to Clices 2. How man
More informationPhysics 122, Fall October 2012
hsics 1, Fall 1 3 Octobe 1 Toda in hsics 1: finding Foce between paallel cuents Eample calculations of fom the iot- Savat field law Ampèe s Law Eample calculations of fom Ampèe s law Unifom cuents in conductos?
More information20-9 ELECTRIC FIELD LINES 20-9 ELECTRIC POTENTIAL. Answers to the Conceptual Questions. Chapter 20 Electricity 241
Chapte 0 Electicity 41 0-9 ELECTRIC IELD LINES Goals Illustate the concept of electic field lines. Content The electic field can be symbolized by lines of foce thoughout space. The electic field is stonge
More informationPhysics 107 TUTORIAL ASSIGNMENT #8
Physics 07 TUTORIAL ASSIGNMENT #8 Cutnell & Johnson, 7 th edition Chapte 8: Poblems 5,, 3, 39, 76 Chapte 9: Poblems 9, 0, 4, 5, 6 Chapte 8 5 Inteactive Solution 8.5 povides a model fo solving this type
More informationr cos, and y r sin with the origin of coordinate system located at
Lectue 3-3 Kinematics of Rotation Duing ou peious lectues we hae consideed diffeent examples of motion in one and seeal dimensions. But in each case the moing object was consideed as a paticle-like object,
More informationThe Law of Biot-Savart & RHR P θ
The Law of iot-savat & RHR P R dx x Jean-aptiste iot élix Savat Phys 122 Lectue 19 G. Rybka Recall: Potential Enegy of Dipole Wok equied to otate a cuentcaying loop in a magnetic field Potential enegy
More information$ i. !((( dv vol. Physics 8.02 Quiz One Equations Fall q 1 q 2 r 2 C = 2 C! V 2 = Q 2 2C F = 4!" or. r ˆ = points from source q to observer
Physics 8.0 Quiz One Equations Fall 006 F = 1 4" o q 1 q = q q ˆ 3 4" o = E 4" o ˆ = points fom souce q to obseve 1 dq E = # ˆ 4" 0 V "## E "d A = Q inside closed suface o d A points fom inside to V =
More informationChapter 5 Force and Motion
Chapte 5 Foce and Motion In Chaptes 2 and 4 we have studied kinematics, i.e., we descibed the motion of objects using paametes such as the position vecto, velocity, and acceleation without any insights
More informationPHYS 2135 Exam I February 13, 2018
Exam Total /200 PHYS 2135 Exam I Febuay 13, 2018 Name: Recitation Section: Five multiple choice questions, 8 points each Choose the best o most nealy coect answe Fo questions 6-9, solutions must begin
More informationChapter 5 Force and Motion
Chapte 5 Foce and Motion In chaptes 2 and 4 we have studied kinematics i.e. descibed the motion of objects using paametes such as the position vecto, velocity and acceleation without any insights as to
More information? this lecture. ? next lecture. What we have learned so far. a Q E F = q E a. F = q v B a. a Q in motion B. db/dt E. de/dt B.
PHY 249 Lectue Notes Chapte 32: Page 1 of 12 What we have leaned so fa a a F q a a in motion F q v a a d/ Ae thee othe "static" chages that can make -field? this lectue d/? next lectue da dl Cuve Cuve
More informationAppendix B The Relativistic Transformation of Forces
Appendix B The Relativistic Tansfomation of oces B. The ou-foce We intoduced the idea of foces in Chapte 3 whee we saw that the change in the fou-momentum pe unit time is given by the expession d d w x
More informationev dm e evd 2 m e 1 2 ev2 B) e 2 0 dm e D) m e
. A paallel-plate capacito has sepaation d. The potential diffeence between the plates is V. If an electon with chage e and mass m e is eleased fom est fom the negative plate, its speed when it eaches
More informationChapter 22: Electric Fields. 22-1: What is physics? General physics II (22102) Dr. Iyad SAADEDDIN. 22-2: The Electric Field (E)
Geneal physics II (10) D. Iyad D. Iyad Chapte : lectic Fields In this chapte we will cove The lectic Field lectic Field Lines -: The lectic Field () lectic field exists in a egion of space suounding a
More informationB. Spherical Wave Propagation
11/8/007 Spheical Wave Popagation notes 1/1 B. Spheical Wave Popagation Evey antenna launches a spheical wave, thus its powe density educes as a function of 1, whee is the distance fom the antenna. We
More informationUnit 6 Practice Test. Which vector diagram correctly shows the change in velocity Δv of the mass during this time? (1) (1) A. Energy KE.
Unit 6 actice Test 1. Which one of the following gaphs best epesents the aiation of the kinetic enegy, KE, and of the gaitational potential enegy, GE, of an obiting satellite with its distance fom the
More informationPHYSICS 151 Notes for Online Lecture #20
PHYSICS 151 Notes fo Online Lectue #20 Toque: The whole eason that we want to woy about centes of mass is that we ae limited to looking at point masses unless we know how to deal with otations. Let s evisit
More informationPHYS 110B - HW #7 Spring 2004, Solutions by David Pace Any referenced equations are from Griffiths Problem statements are paraphrased
PHYS 0B - HW #7 Sping 2004, Solutions by David Pace Any efeenced euations ae fom Giffiths Poblem statements ae paaphased. Poblem 0.3 fom Giffiths A point chage,, moves in a loop of adius a. At time t 0
More informationClass 2. Lesson 1 Stationary Point Charges and Their Forces. Basic Rules of Electrostatics. Basic Rules of Electrostatics
Lesson 1 Stationay Point Chages and Thei Foces Class Today we will: lean the basic chaacteistics o the electostatic oce eview the popeties o conductos and insulatos lean what is meant by electostatic induction
More informationElectricity Revision ELECTRICITY REVISION KEY CONCEPTS TERMINOLOGY & DEFINITION. Physical Sciences X-Sheets
Electicity Revision KEY CONCEPTS In this session we will focus on the following: Stating and apply Coulomb s Law. Defining electical field stength and applying the deived equations. Dawing electical field
More informationName. Date. Period. Engage Examine the pictures on the left. 1. What is going on in these pictures?
AP Physics 1 Lesson 9.a Unifom Cicula Motion Outcomes 1. Define unifom cicula motion. 2. Detemine the tangential velocity of an object moving with unifom cicula motion. 3. Detemine the centipetal acceleation
More informationPhys 222 Sp 2009 Exam 1, Wed 18 Feb, 8-9:30pm Closed Book, Calculators allowed Each question is worth one point, answer all questions
Phys Sp 9 Exam, Wed 8 Feb, 8-9:3pm Closed Book, Calculatos allowed Each question is woth one point, answe all questions Fill in you Last Name, Middle initial, Fist Name You ID is the middle 9 digits on
More informationPhysics 2212 GH Quiz #2 Solutions Spring 2016
Physics 2212 GH Quiz #2 Solutions Sping 216 I. 17 points) Thee point chages, each caying a chage Q = +6. nc, ae placed on an equilateal tiangle of side length = 3. mm. An additional point chage, caying
More informationPhys 1215, First Test. September 20, minutes Name:
Phys 115, Fist Test. Septembe 0, 011 50 minutes Name: Show all wok fo maximum cedit. Each poblem is woth 10 points. k =.0 x 10 N m / C ε 0 = 8.85 x 10-1 C / N m e = 1.60 x 10-1 C ρ = 1.68 x 10-8 Ω m fo
More informationTHE MAGNETIC FIELD. This handout covers: The magnetic force between two moving charges. The magnetic field, B, and magnetic field lines
EM 005 Handout 7: The Magnetic ield 1 This handout coes: THE MAGNETIC IELD The magnetic foce between two moing chages The magnetic field,, and magnetic field lines Magnetic flux and Gauss s Law fo Motion
More informationLesson 9 Dipoles and Magnets
Lesson 9 Dipoles and Magnets Lawence B. Rees 007. You may make a single copy of this document fo pesonal use without witten pemission. 9.0 Intoduction In this chapte we will lean about an assotment of
More informationModule 9: Electromagnetic Waves-I Lecture 9: Electromagnetic Waves-I
Module 9: Electomagnetic Waves-I Lectue 9: Electomagnetic Waves-I What is light, paticle o wave? Much of ou daily expeience with light, paticulaly the fact that light ays move in staight lines tells us
More informationPhys-272 Lecture 13. Magnetism Magnetic forces
Phys-7 Lectue 13 Magnetism Magnetic foces Chaged paticle motion in a constant field - velocity in plane to. Suppose we have a magnetic field given by 0 and a paticle stats out at the oigin moving in the
More informationCourse Updates. Reminders: 1) Assignment #8 will be able to do after today. 2) Finish Chapter 28 today. 3) Quiz next Friday
Couse Updates http://www.phys.hawaii.edu/~vane/phys272-sp10/physics272.html Remindes: 1) Assignment #8 will be able to do afte today 2) Finish Chapte 28 today 3) Quiz next Fiday 4) Review of 3 ight-hand
More informationPhysics 181. Assignment 4
Physics 181 Assignment 4 Solutions 1. A sphee has within it a gavitational field given by g = g, whee g is constant and is the position vecto of the field point elative to the cente of the sphee. This
More informationAP Physics - Coulomb's Law
AP Physics - oulomb's Law We ve leaned that electons have a minus one chage and potons have a positive one chage. This plus and minus one business doesn t wok vey well when we go in and ty to do the old
More informationF g. = G mm. m 1. = 7.0 kg m 2. = 5.5 kg r = 0.60 m G = N m 2 kg 2 = = N
Chapte answes Heinemann Physics 4e Section. Woked example: Ty youself.. GRAVITATIONAL ATTRACTION BETWEEN SMALL OBJECTS Two bowling balls ae sitting next to each othe on a shelf so that the centes of the
More informationSchool of Electrical and Computer Engineering, Cornell University. ECE 303: Electromagnetic Fields and Waves. Fall 2007
School of Electical and Compute Engineeing, Conell Univesity ECE 303: Electomagnetic Fields and Waves Fall 007 Homewok 8 Due on Oct. 19, 007 by 5:00 PM Reading Assignments: i) Review the lectue notes.
More information17.1 Electric Potential Energy. Equipotential Lines. PE = energy associated with an arrangement of objects that exert forces on each other
Electic Potential Enegy, PE Units: Joules Electic Potential, Units: olts 17.1 Electic Potential Enegy Electic foce is a consevative foce and so we can assign an electic potential enegy (PE) to the system
More informationChapter 26: Magnetism: Force and Field
Chapte 6: Magnetism: Foce and Field Magnets Magnetism Magnetic foces Magnetism Magnetic field of Eath Magnetism Magnetism Magnetic monopoles? Pehaps thee exist magnetic chages, just like electic chages.
More informationTo Feel a Force Chapter 7 Static equilibrium - torque and friction
To eel a oce Chapte 7 Chapte 7: Static fiction, toque and static equilibium A. Review of foce vectos Between the eath and a small mass, gavitational foces of equal magnitude and opposite diection act on
More informationFARADAY'S LAW. dates : No. of lectures allocated. Actual No. of lectures 3 9/5/09-14 /5/09
FARADAY'S LAW No. of lectues allocated Actual No. of lectues dates : 3 9/5/09-14 /5/09 31.1 Faaday's Law of Induction In the pevious chapte we leaned that electic cuent poduces agnetic field. Afte this
More informationUnit 6 Practice Test. Which vector diagram correctly shows the change in velocity Δv of the mass during this time? (1) (1) A. Energy KE.
Unit 6 actice Test 1. Which one of the following gaphs best epesents the aiation of the kinetic enegy, KE, and of the gaitational potential enegy, GE, of an obiting satellite with its distance fom the
More informationVoltage ( = Electric Potential )
V-1 of 10 Voltage ( = lectic Potential ) An electic chage altes the space aound it. Thoughout the space aound evey chage is a vecto thing called the electic field. Also filling the space aound evey chage
More informationAP Physics C: Electricity and Magnetism 2001 Scoring Guidelines
AP Physics C: Electicity and Magnetism 1 Scoing Guidelines The mateials included in these files ae intended fo non-commecial use by AP teaches fo couse and exam pepaation; pemission fo any othe use must
More information( )( )( ) ( ) + ( ) ( ) ( )
3.7. Moel: The magnetic fiel is that of a moving chage paticle. Please efe to Figue Ex3.7. Solve: Using the iot-savat law, 7 19 7 ( ) + ( ) qvsinθ 1 T m/a 1.6 1 C. 1 m/s sin135 1. 1 m 1. 1 m 15 = = = 1.13
More informationLast time MAGNETIC FORCE point charge
Last time MAGNTIC FORC point chage Result of Coss Poduct is Pependicula to both and Right-Hand Rule: 1) ) 1 Magnet foce on cuents Hall effect Relatiity effect Today iclicke Question Small metal ball has
More informationPHYS 1441 Section 001 Lecture #14
PHYS 1441 Section 001 Lectue #14 Tuesday, June 29, Chapte 28:Souces of Magnetic Field Souces of Magnetic Field Magnetic Field Due to Staight Wie Foces Between Two Paallel Wies Ampée s Law and Its Veification
More informationChapter Sixteen: Electric Charge and Electric Fields
Chapte Sixteen: Electic Chage and Electic Fields Key Tems Chage Conducto The fundamental electical popety to which the mutual attactions o epulsions between electons and potons ae attibuted. Any mateial
More informationSAMPLE QUIZ 3 - PHYSICS For a right triangle: sin θ = a c, cos θ = b c, tan θ = a b,
SAMPLE QUIZ 3 - PHYSICS 1301.1 his is a closed book, closed notes quiz. Calculatos ae pemitted. he ONLY fomulas that may be used ae those given below. Define all symbols and justify all mathematical expessions
More informationElectrostatics. 1. Show does the force between two point charges change if the dielectric constant of the medium in which they are kept increase?
Electostatics 1. Show does the foce between two point chages change if the dielectic constant of the medium in which they ae kept incease? 2. A chaged od P attacts od R whee as P epels anothe chaged od
More informationFI 2201 Electromagnetism
FI 2201 Electomagnetism Alexande A. Iskanda, Ph.D. Physics of Magnetism and Photonics Reseach Goup Electodynamics ELETROMOTIVE FORE AND FARADAY S LAW 1 Ohm s Law To make a cuent flow, we have to push the
More informationUNIT 13: ANGULAR MOMENTUM AND TORQUE AS VECTORS Approximate Classroom Time: Two 100 minute sessions
Name SFU e-mail @sfu.ca Date(YY/MM/DD) / / Section Goup UNIT 13: ANGULAR MOMENTUM AND TORQUE AS VECTORS Appoximate Classoom Time: Two 100 minute sessions Help! Pue logical thinking cannot yield us any
More informationVECTOR MECHANICS FOR ENGINEERS: STATICS
4 Equilibium CHAPTER VECTOR MECHANICS FOR ENGINEERS: STATICS Fedinand P. Bee E. Russell Johnston, J. of Rigid Bodies Lectue Notes: J. Walt Ole Texas Tech Univesity Contents Intoduction Fee-Body Diagam
More informationPHYS 1441 Section 002. Lecture #3
PHYS 1441 Section 00 Chapte 1 Lectue #3 Wednesday, Sept. 6, 017 Coulomb s Law The Electic Field & Field Lines Electic Fields and Conductos Motion of a Chaged Paticle in an Electic Field Electic Dipoles
More informationF Q E v B MAGNETOSTATICS. Creation of magnetic field B. Effect of B on a moving charge. On moving charges only. Stationary and moving charges
MAGNETOSTATICS Ceation of magnetic field. Effect of on a moving chage. Take the second case: F Q v mag On moving chages only F QE v Stationay and moving chages dw F dl Analysis on F mag : mag mag Qv. vdt
More informationElectrostatics. 3) positive object: lack of electrons negative object: excess of electrons
Electostatics IB 12 1) electic chage: 2 types of electic chage: positive and negative 2) chaging by fiction: tansfe of electons fom one object to anothe 3) positive object: lack of electons negative object:
More information