Question

A magnetic dipole of length 10 cm has pole strength of 20 Am. Find the magnetic moment of the dipole.

(a) 2 Am^2

(b) 200 Am^2

(c) 20 Am^2

(d) 0.2 Am^2

The question was asked in quiz.

My doubt is from Bar Magnet in chapter Magnetism and Matter of Physics – Class 12

Answer 1

The correct option is (a) 2 Am^2

The best I can explain: Magnetic dipole moment = Pole strength × Magnetic length.

Magnetic dipole moment = 20 Am × 0.1 m

Magnetic dipole moment = 2 Am^2.