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A rectangular coil of 25 turns, area of `25cm^(2)` and resistance of `4 ohm//turn` is placed perpendicular to a varying magnetic field, which changes at the rate of `500 T//s`. The induced current in the coil isA. 0.3125 AB. 0.3225 AC. 31.25 AD. 3.225 A |
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Answer» Correct Answer - A `e = NA(dB)/(dt) = 25 xx 25 xx 10^(-4) xx 500 = 31.25 V` and `R = 25 xx 4 = 100 Omega` `:. I = e/R = 31.25/100 = 0.3125 A`. |
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