A direct current of 5A flow through a 0.2H inductor. Calculate the energy stored in the inductor
A
0.5J
B
1.0J
C
2.5J
D
5.0J
Verified Correct Answer: C.
Physical Principles & Numerical Solution
P = \(\frac{1}{2} I^2 L\)
= 5\(^2 \times\) 0.2 \(\times\) \(\frac{1}{2}\)
= 2.5J
Source: Myschool Past Questions Archive (Record #35107)