A direct current of 5A flow through a 0.2H inductor. Calculate the energy stored in...
PHYSICS
WAEC 2008
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
Correct Answer: C. 2.5J
Explanation
P = \(\frac{1}{2} I^2 L\)
= 5\(^2 \times\) 0.2 \(\times\) \(\frac{1}{2}\)
= 2.5J
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