Which one of the following is a unit of magnetic dipole moment ?

Options

A. `(e )/(2m)`
B. `(e )/(m)`
C. `(m)/(2e)`
D. `(m)/(e )`

Answer

B

Explanation

`M=(tau)/(B sin theta)`
`therefore` of M=`(1 Nm)/(IT)=1 Nm//T=1 J//T`