A) \[\frac{mg}{il}\sin \theta \]
B) \[\frac{mg}{il}\tan \theta \]
C) \[\frac{mg\cos \theta }{il}\]
D) \[\frac{mg}{il\,\sin \,\theta }\]
Correct Answer: B
Solution :
Magnetic force \[{{\overrightarrow{F}}_{m}}=ilB\] acts in the direction as shown in given figure. Rod will move downwards with constant velocity, if net force on it is zero.You need to login to perform this action.
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