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Physics - EMI/AC Question with Solution | TestHub

PhysicsEMI/ACSeries AC CircuitsEasy2 minPYQ_2018

PhysicsEasysingle choice

Two coils have a mutual inductance $0.005 H$ . The current changes in the first coil according to equation $I = I_{0} sin ω t$ , where $I_{0} = 10 A$ and $ω =$ $100 π$ radian $/ sec$ . The maximum value of e.m.f. in the second coil is

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Answer:

Solution:

$e ∴ e_{m a x} = M \frac{di}{dt} = 0.005 \times \frac{d}{dt} (I_{0} sin ω t) = 0.0005 \times I_{0} ω cos ω t = 0.005 \times 10 \times 100 π = 5 π [∵ cos ω t = 1]$

Stream:VITEEESubject:PhysicsTopic:EMI/ACSubtopic:Series AC Circuits

⏱ 2mℹ️ Source: PYQ_2018

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