The mutual inductance between two coils is 1.25 H. If the current in the primary changes at the rate of 80 amperes/ second, then the induced e.m.f. in the secondary is

Question

The mutual inductance between two coils is 1.25 H. If the current in the primary changes at the rate of 80 amperes/ second, then the induced e.m.f. in the secondary is (A) 12.5 V (B) 64.0 V (C) 0.016 V (D) 100.0 V

Tardigrade Admin · Accepted Answer

|e|=M (d i/d t)=1.25 × 80=100 V

Q. The mutual inductance between two coils is $1.25 H$ . If the current in the primary changes at the rate of $80$ amperes/ second, then the induced e.m.f. in the secondary is

12.5 V

64.0 V

0.016 V

100.0 V

$∣ e ∣ = M \frac{d i}{d t} = 1.25 \times 80 = 100 V$

Q. The mutual inductance between two coils is 1.25H. If the current in the primary changes at the rate of 80 amperes/ second, then the induced e.m.f. in the secondary is