A) zero
B) \[\frac{\pi }{4}\]
C) \[\frac{\pi }{2}\]
D) \[\pi \]
Correct Answer: C
Solution :
Magnetic field exerts force on moving charge (q), given by \[F=qv\times B\] \[=qvB\text{ }sin\,\theta \] where v is velocity of charge, B the magnetic field,\[\theta \]the angle between field and charge motion. Force will be maximum when\[sin\,\theta \]is maximum. That is\[={{90}^{o}},\text{ }\sin \text{ }{{90}^{o}}=1\]. \[\therefore \] \[{{F}_{m}}=qvB\]You need to login to perform this action.
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