Question

A charge moving with velocity v in x-direction is subjected to a magnetic field in the negative x-direction. As a result, the charge will
⦁ Remain un affected
⦁ Accelerate along x-axis
⦁ Start moving in circular path
⦁ Move along a helical path around y-axis

Answer 1

F=q(V×B)

=qVBsin0

=qVBsin(1800)       (∵ velocity is in X-direction and B is in -X-direction)

=0                      (∵sin1800=0)

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