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

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Solution

When two circular coils A and B are placed close to each other, and the current in the coil A is changed then some current will be induced in the coil B and the magnetic field associated with it also changes. Thus the magnetic field around coil B also changes. This change in the magnetic field lines around coil B induces an electric current in it. This process is known as electromagnetic induction.

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