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NEET 2023 · Rotating Conductors & AC Generator

Rotating Conductors & AC Generator question from NEET 2023

Q22NEET 2023Easy

Rotating Conductors & AC Generator

An emf is generated by an ac generator having 100 turn coil, of loop area $1\text{ m}^2$ . The coil rotates at a speed of one revolution per second and placed in a uniform magnetic field of $0.05\text{ T}$ perpendicular to the axis of rotation of the coil. The maximum value of emf is :-

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Answer: (b)

$e_0 = NBA\omega$ with $\omega = 2\pi f = 2\pi\text{ rad/s}$ .
$e_0 = 100 \times 0.05 \times 1 \times 2\pi = 10\pi$
$e_0 = 31.4\text{ V}$ , so the answer is (b).

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