A) q v B
B) q B/v
C) zero
D) B v/q
Correct Answer: C
Solution :
[c] \[{{F}_{n}}=q(\overrightarrow{v}\times \overrightarrow{B})\] \[=qvB\sin \theta =0\,(\text{because}\,\theta =0{}^\circ )\]
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