MCQ
A certain elastic conducting material is stretched into a circular loop. It is placed with its plane perpendicular to a uniform magnetic field $B =0.8\,T$. When released the radius of the loop starts shrinking at a constant rate of $2\,cm ^{-1}$. The induced emf in the loop at an instant when the radius of the loop is $10\,cm$ will be $........mV$.
- ✓$10$
- B$11$
- C$12$
- D$13$
