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JEE Main 2022 (24 Jun, Shift 2) · Rotating Conductors & AC Generator

Rotating Conductors & AC Generator question from JEE Main 2022 (24 Jun, Shift 2)

Q24JEE Main 2022 · 24 JUN · SHIFT 2Easy

Rotating Conductors & AC Generator

A circular coil of 1000 turns each with area 1m2 is rotated about its vertical diameter at the rate of one revolution per second in a uniform horizontal magnetic field of 0.07T. The maximum voltage generation will be ___________ V.

Numerical answer type. Work it out, then open the answer.

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Answer: 440

Peak emf of a rotating coil: $e_0 = NBA\omega$ , with $\omega = 2\pi f = 2\pi$ rad/s.
$e_0 = 1000 \times 0.07 \times 1 \times 2\pi = 140\pi$
$e_0 \approx 439.8 \approx 440\text{ V}$

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