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1. |
The energy stored in the magnetic field of a solenoid 30 cm long and 3 cm diameter wound with 1000 turns of wire carrying a current of 10 A is |
A. | 0.015 joule |
B. | 0.15 joule |
C. | 0.5 joule |
D. | 1.15 joule |
Answer» C. 0.5 joule | |