A metallic rod of mass per unit length 0.5 kg m –1 is lying horizontally on a smooth inclined plane which makes an angle of 30º with the horizontal. The rod is not allowed to slide down by flowing a current through it when a magnetic field of induction 0.25 T is acting on it in the vertical direction. The current flowing in the rod to keep it stationary is:
Text Solution
Verified by ExpertsThe correct answer is:
B
For equilibrium,
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