Answers to 2016 Practice Exam III (chapters 28‐30+Review) Question 1. Answer a. , direction out of page Comment if Necessary Ensure you can do RHR b. Velocity is same magnitude since UFCM. Thus KE is same. c. You must change BOTH direction to INTO the Page AND Since mass of proton is larger than mass of electron you must also INCREASE the strength of the B‐ field too. 2. ̂ ̂ . 3. . A E Zero 4. 5. 6. 7. Ensure you can explain RHR Be careful with eqn for PE! Technically this is a combo of CH28 and CH29; I would also be prepared if you were asked to find the Net Mu vector instead or in addition. Unlike currents REPULSE 8. 9. 10. C . . . 11. . 13. 14 15. I would be sure that I could start with Ampere’s law and get this answer! Unlike currents REPULSE Best if you do RHR and draw results before attempting the math to see if fields aid or oppose. Unlike currents REPULSE Growth curve since battery connected . E) 12. . a) into the page b) Counter Clockwise C) Larger a) 16 Hz b) Amplitude is 0.08 volts c) magnitude is 0.94 volts. Direction of current by Lenz’s law is CLOCKWISE. Your exam won’t have none of the above as a choice. Decay curve since batter disconnected. Ensure you understand fully Faraday’s and Lenz’s Laws! Answers to 2016 Practice Exam III (chapters 28‐30+Review) 16. C V q E No die 1.888 pF 12 22.66 pC 40000 V/m A B With Die 12.272 pF 1.84 V 22.66 pC 6153 V/m Since Battery disconnected, this time the charge stays constant NOT the voltage! 17. 18. 19. i1 i2 i3 ‐.0807 A .1566 A .0759 .