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Physics - EMI/AC Question with Solution | TestHub

PhysicsEMI/ACSelf and mutual inductorEasy2 minPYQ_2020

PhysicsEasysingle choice

Two coils have mutual inductance $0.005 H$ . The current changes in the first coil according to equation $I = I_{0} \sin ωt$ , where $I_{0} = 10 A$ and $ω = 100 π rad s^{- 1}$ . The maximum value of E.M.F. in the second coil is

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Answer:

Solution:

$e = M \frac{di}{dt} = 0 .005 \times \frac{d}{dt} (I_{0} sinωt)$

$= 0 .005 \times I_{0} ωcosωt$

$∴ e_{\max} = 0 .005 \times 10 \times 100 π = 5 π$ $[∵ \cos ω t = 1]$

Stream:NTA_ABHYAS_NEETSubject:PhysicsTopic:EMI/ACSubtopic:Self and mutual inductor

⏱ 2mℹ️ Source: PYQ_2020

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