Question

Find the dimensions of

(a) electric dipole moment p and

(b) magnetic dipole moment M.

The defining equations are p = q.d and M = IA;

where d is distance, A is area, q is charge and I is

Answer 1

(a) Electric dipole moment, P = q.(2d)

Here, [q] = [AT] and d = [L]

∴ Dimension of electric dipole moment = [LTA]

(b) Magnetic dipole moment, M = IA

Here, A = [L2]

∴ Dimension of magnetic dipole moment = [L2A]