Questions
A metallic rod of mass per unit length 0.5 kg is lying horizontally on a smooth inclined plane which makes an angle of 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
detailed solution
Correct option is D
Mass per unit length of a metallic rodml=0.5 kg m-1Let I be the current flowing. For equilibrium,mgsin30°=IlBcos30°I=mglBtan30°=0.5×9.80.25×3=11.32 ATalk to our academic expert!
Similar Questions
A copper rod AB of length 2m is moving in a uniform magnetic field of 1.5 T with a velocity of 3 m/s. The induced potential difference between ends A and B is
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