Electro Magnetic Induction And Alternating Currents Question 570

Question: A varying current at the rate of 3 A/s in a coil generates an e.m.f. of 8 mV in a nearby coil. The mutual inductance of the two coils is [Pb. PMT 2000]

Options:

A) 2.66 mH

B) $ 2.66\times {{10}^{-3}},mH $

C) 2.66 H

D) 0.266 H

Show Answer

Answer:

Correct Answer: A

Solution:

$ |e|,=M\frac{di}{dt}\Rightarrow 8\times {{10}^{-3}}=M\times 3\Rightarrow A_{1}=2.66mH $



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