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Two circular coils A and B are placed cl...

Two circular coils A and B are placed close to each other. If the current in the coil A is changed, will some current be induced in the coil B? Give reason.

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By changing current in the coil A, a current will be induced in the coil B which is placed close to A. This is due to the reason that magnetic field lines linked with A also get linked with B due to its being close to A. When the current in A changes, magnetic field lines linked with A change. Obviously, magnetic field lines linked with B also change. As a result of this, current is induced in the coil B. (This phenomenon is called mutual induction).
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Knowledge Check

  • Two circular coils A and B are facing each other in shown figure. The current I through A can be alterned

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    A
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