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MHT CET 2023 (9 May, Shift 2) · Motional EMF

Motional EMF question from MHT CET 2023 (9 May, Shift 2)

Q27MHT CET 2023 · 9 MAY · SHIFT 2Easy

Motional EMF

If current ' $I$ ' is flowing in the closed circuit with collective resistance ' $R$ ', the rate of production of heat energy in the loop as we pull it along with a constant speed ' $V$ ' is ( $L =$ length of conductor, $B =$ magnetic field)

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Answer: (d)

Induced emf $\varepsilon = BLV$ , current $I = \frac{BLV}{R}$ .
Heat produced per second $P = I^2R = \frac{\varepsilon^2}{R}$ .
$P = \frac{B^2L^2V^2}{R}$ . So the answer is (d).

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