A) \[B\pi {{r}^{2}}IN\]
B) \[\frac{B{{r}^{2}}I}{\pi N}\]
C) Zero
D) \[\frac{B\pi {{r}^{2}}I}{N}\]
Correct Answer: A
Solution :
[a] |
Magnetic moment of coil |
Torque on loop (coil) |
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