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A negatively charged particle in a uniform magnetic field B moves with constant speed v in a circular path of radius r, as shown. Which of the following graphs best represents the radius r as a function of the magnitude of B, if the speed v is constant?

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Best answer

The correct option is: (B)

Explanation:

Based on … Fnet(C) = mv2/r … Fb = mv2/r … qvB = mv2/r … r = mv/qB … inverse

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