Question

Calculate the energy stored in the inductor if the current value is 4 A and inductance value is 1 H.

(a) 4 J

(b) 2 J

(c) 8 J

(d) 5 J

The question was posed to me by my school principal while I was bunking the class.

My doubt stems from Electric Motors in section Braking of Electric Motors of Electric Drives

Answer 1

Right answer is (c) 8 J

Easy explanation: The energy stored in the inductor is .5×L×I^2. It is the total amount of energy stored in the inductor in the steady state condition. E=.5×L×I^2=.5×1×4×4=8 J.