20_InstSolManual_PDF_Part1

20_InstSolManual_PDF_Part1 - MAGNETIC FIELD AND MAGNETIC...

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20-1 M AGNETIC F IELD AND M AGNETIC F ORCES 20 Answers to Multiple-Choice Problems 1. E 2. C 3. C 4. B 5. D 6. A 7. C 8. C 9. B 10. A 11. C 12. B 13. A 14. B 15. A Solutions to Problems 20.1. Set Up: The force on the particle is in the direction of the deflection of the particle. The directions of and are shown in Figure 20.1. Apply the right-hand rule to the directions of and See if your thumb is in the direction of or opposite to that direction. Use with to calculate F . Figure 20.1 Solve: (a) When you apply the right-hand rule to and your thumb points east. is in this direction, so the charge is positive. (b) 20.2. Set Up: The force
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