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17 October, 12:15

A wire loop has an area of 0.12 m^2 and the magnetic field through it increase from 0 to 0.20 T in 0.30s. What is the induced emf in the loop

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  1. 17 October, 14:08
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    Induced emf = - NA (ΔФ/Δt)

    N = 1 (assuming its 1 loop), ΔФ = 0.2-0 = 0.2 T, Δt = 0.3 sec, A = 0.12 m^2

    Therefore,

    Induced emf = - 1*0.12 * (0.2/0.3) = - 0.08 V
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