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Question
(a) Describe briefly one way of producing an induced e.m.f.
(b) State one factor that determines the magnitude of induced e.m.f. in part (a) above.
(c) What factor determines the direction of induced e.m.f. in part (a) above?
(a) Describe briefly one way of producing an induced e.m.f.
(b) State one factor that determines the magnitude of induced e.m.f. in part (a) above.
(c) What factor determines the direction of induced e.m.f. in part (a) above?
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Solution
(a) Induced e.m.f. can be produced by moving a magnet through a solenoid. As the magnet moves, the flux associated with the coil changes, and hence an e.m.f. is induced in it.
(b) The magnitude of induced e.m.f. can be increased by increasing the number of turns of the coil.
(c) The direction of induced e.m.f. depends on whether there is an increase or decrease in the magnetic flux.
(a) Induced e.m.f. can be produced by moving a magnet through a solenoid. As the magnet moves, the flux associated with the coil changes, and hence an e.m.f. is induced in it.
(b) The magnitude of induced e.m.f. can be increased by increasing the number of turns of the coil.
(c) The direction of induced e.m.f. depends on whether there is an increase or decrease in the magnetic flux.
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