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Reflection 3-solutions

# Reflection 3-solutions - sung(es24394 Reection 3 chiu(57460...

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sung (es24394) – Reflection 3 – chiu – (57460) 1 This print-out should have 12 questions. Multiple-choice questions may continue on the next column or page – find all choices before answering. 001(part1of6)10.0points Looking in the direction of motion of the charge, in which direction are the magnetic field vectors aligned with respect to each ring of observation points? (Hint: It may help to rotate the view to observe this.) 1. clockwise, tangential to the rings correct 2. There are components in the radial and tangential directions. 3. radial, inwards 4. radial, outwards 5. counterclockwise, tangential to the rings Explanation: 002(part2of6)10.0points What happens to the magnetic field at each observation point when you increase the speed of the moving charge? Increase it by a factor of 3, for instance. Ia) Its maximum magnitude increases. Ib) It approaches the zero vector. Ic) Its maximum magnitude remains the same. IIa) Its direction remains the same. IIb) Its direction becomes opposite. 1. Ib, IIa 2. Ia, IIa correct 3. Ia, IIb 4. Ib, IIb 5. Ic, IIb 6. Ic, IIa Explanation: 003(part3of6)10.0points What happens to the magnetic field at each observation point when you change the sign of the charge of the moving particle? Ia) Its maximum magnitude increases. Ib) It approaches the zero vector. Ic) Its maximum magnitude remains the same. IIa) Its direction remains the same. IIb) Its direction becomes opposite.

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