How will you induce an emf by changing the area enclosed by the coil?
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As shown in figure when a bar magnet is dropped across a current carrying coil, emf is induced in the coil. emf appears as pulses when the bar magnet enters the loop and exits the loop. Induced emf is equal in magnitude to rate of change of magnetic flux but sign of emf is opposit to sign of flux change
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As shown in figure when a bar magnet is dropped across a current carrying coil, emf is induced in the coil. emf appears as pulses when the bar magnet enters the loop and exits the loop. Induced emf is equal in magnitude to rate of change of magnetic flux but sign of emf is opposit to sign of flux change
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