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  • An e.m.f is produced in a coil, which is not connected to an external voltage source. This can be due to (a) the coil being in a time varying magnetic field.(b) the coil moving in a time varying magnetic field.

An e.m.f is produced in a coil, which is not connected to an external voltage source. This can be due to
(a) the coil being in a time varying magnetic field.
(b) the coil moving in a time varying magnetic field.
(c) the coil moving in a constant magnetic field.
(d) the coil is stationary in external spatially varying magnetic field, which does not change with time.

Answers (1)

The correct answers are the options (a,b,c)

EMF is induced in a conductor only if it is placed in a magnetic field which is moving relative to the conductor. The first three options i.e. a, b and c justify the above statement.

 

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