As a result of change in the magnetic flux linked to the closed loop shown in the figure, an emf V volt is induced in the loop. The work done (joules) in taking a charge Q coulomb once along the loop is

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2QV

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answer is A.

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Detailed Solution

Induced emf = work done in taking a charge Q once along the loopcharge Q i.e., V=WQ⇒ W=VQ

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