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The variation of induced emf (epsilon ) ...

The variation of induced emf (`epsilon` ) with time (t) in a coil if a short bar magnet is moved along its axis with a constant velocity is best represented as

A

B

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D

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The correct Answer is:
B
As the magnet move towards the coil, the magnetic flux increases (non-linearly). Also, there is a change in polarity of induced emf when the magnet passes on the other side of the coil.
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DC PANDEY ENGLISH-ELECTROMAGNETIC INDUCTION-Taking it together
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