PHYSICS 240 Final Solutions -- Fall 2003-1

PHYSICS 240 Final Solutions -- Fall 2003-1 - Physics 240...

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Physics 240 Fall 2005: Final Exam Please print your name:___________________________________________________ Please list your discussion section number:___________________________________ Please list your discussion instructor:________________________________________ Form #1 Instructions 1. Fill in your name above 2. This will be a 1.5 hour, closed book exam. The exam includes 20 questions. 3. You may use a calculator, please do not share calculators 4. You may use four 3”x5” note cards (three from the earlier exams, plus one new one) with notes and equations you think may be useful. You can write on both sides of the card if you like. 5. You will be asked to show your University student ID card when you turn in your exam. ID checked by:___________________________________ Table of constants: ε 0 = 8.85 x 10 -12 C 2 /Nm 2 k = 1/(4 πε 0 ) q electron =-1.6 x 10 -19 C q proton =1.6 x 10 -19 C m electron =9.1 x 10 -31 kg m proton =1.67 x 10 -27 kg μ 0 = 4 π x 10 -7 Tm/A G = 6.67 x 10 -11 Nm 2 /kg 2
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Topics: 1. Electric charge 2. Insulators and conductors 3. *Coulomb’s law 4. Electric field 5. *Electric flux and Gauss’ law 6. Shielding 7. *Electric potential energy and potential 8. *Equipotential surfaces and electric field 9. *Capacitors and dielectrics 10. Energy stored in capacitors 11. Electric current and current density 12. *Resistance and Ohm’s law 13. Energy and power in circuits 14. *Resistors in series and parallel 15. *Kirchoff’s Laws 16. *Circuits with capacitors 17. RC circuits 18. Ammeters and Voltmeters 19. Magnetic field 20. *Magnetic force on a charge 21. Magnetic force on a current 22. Loops and magnetic torque 23. Ampere’s law 24. Magnetic flux 25. *Faraday’s law 26. *Lenz’s law 27. Electrical generators and motors 28. Inductance 29. RL circuits 30. *Energy stored in the magnetic field 31. *Transformers 32. Alternating currents and voltages 33. Capacitors in AC circuits 34. RC circuits 35. *LC oscillators 36. Inductors in AC circuits 37. *RLC circuits 38. Resonance in AC circuits 39. Production of EM waves 40. *Propagation and the EM Spectrum 41. Energy and momentum in EM waves 42. Polarization 43. Reflection 44. *Refraction 45. Dispersion
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1: In the figure below, two batteries generate current through a network of three resistors. The batteries supply voltages ξ 1 =5.0V and ξ 2 =12.0V. The resistors have values R 1 =6.0 Ω , R 2 =10.0 Ω , and R 3 =4.0 Ω . What is the current i 3 ? Please give a positive answer if the current flow in the direction shown by the arrow, and negative if it flows in the direction opposite the arrow. a) -0.52A b) -1.9 A c) -0.34 A d) 0.18 A e) *-1.0 A 2: A 400 μ F capacitor is connected to a 350 milli-Henry inductor as shown in the circuit below. While the switch is open, the capacitor is charged until the potential difference across it is 45 Volts. When the switch is closed, the energy in this circuit oscillates back and forth between the capacitor and the inductor. What is the maximum current which
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This note was uploaded on 04/01/2008 for the course PHYSICS 240 taught by Professor Davewinn during the Fall '08 term at University of Michigan.

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PHYSICS 240 Final Solutions -- Fall 2003-1 - Physics 240...

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