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.  




As the current flows in coil A, a magnetic field is generated around it.

As the coil B is situated near coil A, it also experiences the magnetic field.


As the current in coil A changes, the magnetic field associated with it also changes.

Hence, the magnetic field around coil B also changes.


Due to change in magnetic field around the coil B, a current is induced in coil B.

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CA Maninder Singh is a Chartered Accountant for the past 14 years and a teacher from the past 18 years. He teaches Science, Economics, Accounting and English at Teachoo