A) \[M\times B\]
B) \[M-B\]
C) \[\frac{1}{2}M\times B\]
D) \[M+B\]
Correct Answer: A
Solution :
Torque is equal to instantaneous moment of deflecting couple . The torque acting is given by \[\tau =\] force\[({{F}_{1}}={{F}_{2}})\times \] perpendicular distance \[\tau =iBl\times b\sin \theta \] Where\[i\]is current, B is magnetic field,\[l\]the length and b the distance the term\[ilb=M=\]dipole moment \[\tau =MB\,sin\theta \] \[\tau =M\times B\]You need to login to perform this action.
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