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An electron of charge e enters a magneti...

An electron of charge e enters a magnetic field B with a velocity v and moves in a circular path of diameter d in the field. When the electron completes one semi-circular path, the work done by the field

A

zero

B

Bevd

C

Bevπd

D

none of these

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The correct Answer is:
A
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BINA LIBRARY-ELECTROMAGNETIC INDUCTION AND ALTERNATING CURRENT-EXERCISE
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  13. An electron of charge e enters a magnetic field B with a velocity v an...

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