AP EAMCET · PHYSICS · Electromagnetic Induction
A pair of adjacent coils having a mutual inductance, \(M\). The current in one coil changes from 0 to \(16 \mathrm{~A}\) in \(0.3 \mathrm{~s}\) and the change of flux linkage with the other coil is \(40 \mathrm{~Wb}\). The value of \(M\) is
- A \(0.4 \mathrm{H}\)
- B \(0.12 \mathrm{H}\)
- C \(2.5 \mathrm{H}\)
- D \(8.3 \mathrm{H}\)
Answer & Solution
Correct Answer
(C) \(2.5 \mathrm{H}\)
Step-by-step Solution
Detailed explanation
Coefficient of mutual induction between 2 coils is given by \(M=\frac{\text { Flux change in Ind coil }}{\text { Current change in Ist coil }}\) Given, flux change \(=40 \mathrm{~Wb}\) and current change \(=16-0=16 \mathrm{~A}\) \(\Rightarrow\) so,…
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