Question
What is the work done by the magnetic field on the moving charge?

Answer

  1. No work is done by the magnetic field on the moving charge.
Explanation:
The magnetic force acts in such a way that the direction of the magnetic force and velocity are always perpendicular to each other. If force and velocity are perpendicular force and displacement are also perpendicular, thus W = FS cos q, if q = 90, work done will be zero.

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