How is magnetic flux linked with the armature coil changed in generator?
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it changes due to rotation of armature
we have formula
∅(magnetic flux)=BAcosФ
B and A remains same
cosФ changes as angle changes due to rotation hence flux linked with armature coil changes
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Faraday's Principle of Electromagnetic Induction states that the emf induced in a loop due by a changing magnetic flux is equal to the rate of change of the magnetic flux threading the loop. The magnetic flux threading a coil of wire can be changed by moving a bar magnet in and out of the coil.
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