Answers to 2016 Practice Exam I (chapters 21‐24) Question 1. 2. 3. 4. 5. 6. Answer A B B A Fnet vector = 14.2 N @ 162 7. 8. D A 9. C 10. 11. a) B b) E a)E=0 b)E=0 12. RHR matters! Conducting has meaning! d)
13. 14 15. A D Essay 16. 17. 18. A At X= 5 cm and at X=11.7 cm E (179µV) 19. 20. 21. C E a)
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Disregard the direction since you answered that in question 7 and it is same. Although the math gives two possible answers Physics says only one of those works here. c)
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d) Essay Comment if Necessary 2.5 electrons not possible d/3 Remember calculator can lie on arcTan See me if you are not sure if your essay answer is correct. Two answers here since voltage is a scalar The actual exam won’t have none of the above as a possible choice Be careful with difference in types of work Part (d) should really say using the result of part (b)! See me if you are not sure if your essay answer is correct.