In a coil of self-induction 5 H, the rate of change of current is 2 As-1. Then emf induced in the coil is
A. 10 V
B. -10 V
C. 5 V
D. -5 V
Answer:A
In a coil of self-induction 5 H, the rate of change of current is 2 As-1. Then emf induced in the coil is
A. 10 V B. -10 V C. 5 V D. -5 V