A) zero
B) \[\sqrt{3}i\ell B\]
C) \[3i{{\ell }^{2}}B\]
D) \[\frac{\sqrt{3}}{4}i{{\ell }^{2}}B\]
Correct Answer: D
Solution :
Magnetic moment \[=M=IA=i\frac{\sqrt{3}{{\ell }^{2}}}{4}\] Since \[\vec{A}\bot \vec{B},\] we have Torque \[=\tau =MB\,\sin \,{{90}^{o}}\] \[=\sqrt{3}\frac{i{{\ell }^{2}}B}{4}\]You need to login to perform this action.
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