A horizontal loop $abcd$ is moved across the pole pieces of a magnet as shown in fig. with a constant speed $v$. When the edge $ab$ of the loop enters the pole pieces at time $t = 0\ sec$, which one of the following graphs represents correctly the induced emf in the coil

Question

Dr. Abubacker · Accepted Answer

(d) When loop enters in field between the pole pieces, flux linked with the coil first increases (constantly) so a constant emf induces. When coil enters completely within the field, there is no flux change, so $e = 0$
When coil exists, flux linked with the coil decreases, hence again emf induces, but in opposite direction

Q. A horizontal loop $abcd$ is moved across the pole pieces of a magnet as shown in fig. with a constant speed $v$. When the edge $ab$ of the loop enters the pole pieces at time $t = 0\ sec$, which one of the following graphs represents correctly the induced emf in the coil

Explanation

Reviewed by Dr. Abubacker

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