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3 August, 04:17

A coil of wire consists of 20 turns, each of which has an area of 0.0015 m2. A magnetic field is perpendicular to the surface with a magnitude of B 4.91 T/s t - 5.42 T/s2 t2. What is the magnitude of the induced emf in the coil?

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  1. 3 August, 04:46
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    magnitude of the induced emf in the coil is 0.0153 V

    Explanation:

    Given data

    no of turns = 20

    area = 0.0015 m²

    magnitude B1 = 4.91 T/s

    magnitude B2 = 5.42 T/s

    to find out

    the magnitude of the induced emf in the coil

    solution

    we know here

    emf = - n A d∅ / dt

    so here n = 20 and

    A = 0.0015

    and d∅ = B2 - B1 = 5.42 - 4.91

    d∅ = 0.51 T and dt at 1 sec

    so put all value

    emf = - n A d∅ / dt

    emf = - 20 (0.0015) 0.51 / 1

    emf = - 0.0153

    so magnitude of the induced emf in the coil is 0.0153 V
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