A and B are placed close to each other if the current in the coil is changed will some current be induced in the coil be give reason
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As thevcurrent in the first coil changes the magnetic field linked with it also changes. Thus magnetic field lines around the secondary coil also change. Hence the change in magnetic field lines linked with secondary coil is the cause of induced electric current in it. This process by which a changing magnetic field in a conductor induces a current in another conductor is called electromagnetic induction.
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Explanation:
Two circular coils A and B are placed close to each other. When the current in coil A is changed, the magnetic field associated with it also changes. As a result, the magnetic field around coil B also changes. This change in magnetic field lines around coil B induces an electric current in it. This is called electromagnetic induction.
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