Question:
Figure shows a square loop of $5 \mathrm{~cm}$ being moved towards right at a constant speed of $1 \mathrm{~cm} / \mathrm{s}$. The front edge enters the 20 $\mathrm{cm}$ wide magnetic field at $t=0$. Find the emf induced in the loop at
(a) $t=2 s$,
(b) $t=10 s$,
(c) $t=22 s$ and
(d) $t=30 s$.
Solution:
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