In the circuit shown, sliding contact is moving with uniform velocity towards right. Its value a...

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In the circuit shown, sliding contact is moving with uniform velocity towards right. Its value at some instance is \( 12 \Omega \). The current in the circuit at this instant of time will be
(A) \( 0.5 \mathrm{~A} \)
(B) More than \( 0.5 \mathrm{~A} \)
(C) Less than \( 0.5 \mathrm{~A} \)
(D) May be less or more than \( 0.5 \mathrm{~A} \) depending on the value of \( L \)
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