A) \[[LA]\]
B) \[[{{L}^{2}}A]\]
C) \[[L{{T}^{-1}}A]\]
D) \[[{{L}^{2}}{{T}^{-1}}A]\]
Correct Answer: B
Solution :
Magnetic moment of a current carrying coil is defined as the product of current in the coil with the area of coil in vector form. That is, \[\overset{\to }{\mathop{\mathbf{M}}}\,=I\overset{\to }{\mathop{\mathbf{A}}}\,\] Thus, dimensions of\[M=[A][{{L}^{2}}]\] \[=[{{L}^{2}}A]\]
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