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Q.

A circular loop of radius 1m is kept in a magnetic field of strength 2 T directed perpendicular to the plane of loop. Resistance of the loop wire is 2/πΩ/m. A conductor of length 2 m is sliding with a speed 1 m/s as shown in the figure. Find the instantaneous force acting on the rod in Newtons [Assume that the rod has negligible resistance]

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answer is 16.

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Detailed Solution

Bv(L)=I RF=BILF=B2v L2/R

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