A) Bev
B) \[\frac{Be}{v}\]
C) \[\frac{B}{ev}\]
D) zero
Correct Answer: D
Solution :
The forece on electron \[F=qv\,B\,\sin \theta \] As the electron is moving parallel to B So, \[\theta =0{}^\circ \Rightarrow qv\,B\,\sin \,0{}^\circ =0\]
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