The unit of magnetic moment is

Options

A. T/J
B. `JT^(-1)`
C. `A//m^(2)`
D. `A//m`

Answer

B

Explanation

Its SI unit of magnetic moment is `Am^(2)`. It may be written as Nm/T or `JT^(-1)`
As, we know that magnetic
moment, M=lA
Unit wise
`[m]=[lxxlxxl]=[(lxxB)/(B)xxl]`
Also, B is magnetic field i.e., `l(lxxB)` has unit of force (N), B has unit tesla (T). ltBrgt So, unit of m
`=("(newton) (length)")/(("tesla"))=("joule")(T)`
`=(J)/(T)=JT^(-1)`