Rankers Physics

Mutual Induction: Practice Problem & Solution

The mutual inductance between a primary and secondary circuits is 0.5 H. The resistance of the primary and the secondary circuits are 20Ω and 5Ω respectively. To generate a current of 0.4 A in the secondary, current in the primary must be changed at the rate of :
4.0 A/s
1.6 A/s
16.0 A/s
8.0 A/s

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Similar Practice Questions

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1. Two coils of self inductance \(2\text{ mH}\) and \(8\text{ mH}\) are placed so close together that the effective flux in one coil is completely linked with the other. The mutual inductance between these coils is:
2. Two coils X and Y are placed in a circuit such that a current changes by 2 A in coil X and the magnetic flux change of 0.4 Wb occurs in coil Y. The value of mutual inductance of coils is :
3. Two coaxial solenoids are made by winding thin insulated wire over a pipe of cross-sectional area A = 10 cm² and length = 20 cm. If one of the solenoids has 300 turns and the other 400 turns, their mutual inductance is \[\left( \mu=4\pi\times 10^{-7} T m A^{-1}\right)\] :
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