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MHT CET 2025 (25 Apr, Shift 2) · Magnetic Flux & Faraday's Law

Magnetic Flux & Faraday's Law question from MHT CET 2025 (25 Apr, Shift 2)

Q26MHT CET 2025 · 25 APR · SHIFT 2Easy

Magnetic Flux & Faraday's Law

A coil of ' $n$ ' turns and resistance $R\Omega$ is connected in series with a resistance $\frac{R}{2}$ . The combination is moved for time ' $t$ ' second through magnetic flux $\phi_1$ to $\phi_2$ . The induced current in the circuit is

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Answer: (b)

Total resistance $R + \frac{R}{2} = \frac{3R}{2}$
Emf $e = \frac{n(\phi_1 - \phi_2)}{t}$
$I = \frac{e}{3R/2} = \frac{2n(\phi_1 - \phi_2)}{3Rt}$
So the answer is (b) $\frac{2n(\phi_1 - \phi_2)}{3Rt}$ .

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