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3 April, 23:45

The coil of a generator has a radius of 0.25 m. When this coil is unwound, the wire from which it is made has a length of 11.0 m. The magnetic field of the generator is 0.17 T, and the coil rotates at a frequency of 13 Hz. What is the peak emf of this generator?

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  1. 4 April, 00:07
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    19.06 Volt

    Explanation:

    r = 0.25 m, l = 11 m, B = 0.17 T, f = 13 Hz

    length for one turn = 2 x 3.14 x r = 2 x 3.14 x 0.25 = 1.57 m

    Total number of turns in 11 m

    N = 11 / 1.57 = 7

    Peak emf, e0 = N x B x A x 2 x 3.14 x f

    e0 = 7 x 0.17 x 3.14 x 0.25 x 0.25 x 2 x 3.14 x 13 = 19.06 Volt
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