A 50 mH coil carries a current of 4 amp. The energy stored in joule is_______
A. 0.4 J
B. 4.0 J
C. 0.8 J
D. 0.04 J
Answer:A
A 50 mH coil carries a current of 4 amp. The energy stored in joule is_______
A. 0.4 J B. 4.0 J C. 0.8 J D. 0.04 J