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1. |
A circular coil having an area of 3.14 10-2 m2 and 30 turns is rotated about its vertical diameter with an angular speed of 70 rad-1 in a uniform horizontal magnetic field of magnitude 5 10-2 T. If the coil forms a closed loop of resistance 15 , what is the average power loss due to Joule heating? |
A. | 0.360 |
B. | 0.362 |
C. | 0.724 |
D. | 0.726 |
Answer» C. 0.724 | |