Magnetic induction: Serway Problem $20\mathrm{.}10$

Iv The flexible loop in Figure P$20\mathrm{.}10$ has a radius of $12$ cm and is in a magnetic field of strength $,0\mathrm{.}15T.$ The loop is grasped at points A and $B$ and stretched until its area is nearly zero. If it takes $0\mathrm{.}20$ s to close the loop, what is the magnitude of the average induced emf in it during this time?

Figure P$20\mathrm{.}10$

Details

An illustration shows a loop in a magnetic field directed into the surface. Two points, A and B$,$ are marked on opposite sides of the loop.

Problems $1012,$ and ${226}_{?}.$