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Question

A rectangular loop with a sliding connector of length l = 1.0m is situated in a uniform magnetic field B = 2T perpendicular to the plane of loop. Resistance of conector is r = 2Ω. Two resistances of 6 Ω and 3Ω are connected as shown in figure. The external force required to keep the connector moving with a constant velocity v=2 m/s is





A
6 N
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B
4 N
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C
2 N
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D
1 N
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