A) A-m2
B) A-m
C) A-m3
D) kg-m3
Correct Answer: A
Solution :
Magnetic moment \[(M)=NIA\] where N = number of turn, \[I\] = electron current, A = area of cross-section of the coil \[\therefore \] Unit of magnetic moment \[=A\text{-}{{\text{m}}^{2}}\]
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