Question

The magnetic moment has dimensions of

• A. $\left[LA\right]$
• B. $\left[L^{2}A\right]$
• C. $\left[L{T}^{-1}A\right]$
• D. $\left[L^2{T}^{-1}A\right]$

Answer 1

The correct option is B $\left[L^{2}A\right]$

Magnetic moment of a coil carrying current is,

$M=I.A$

[A is area of cross section and i is current]

Dimension of $M=A{L}^2$