1. Tardigrade
  2. Question
  3. Physics
  4. A magnetised wire of moment M is bent into an arc of a circle subtending an angle 60° at the centre, then the new magnetic moment is

Question Error Report

Thank you for reporting, we will resolve it shortly

Back to Question

Q. A magnetised wire of moment $M$ is bent into an arc of a circle subtending an angle $60^{\circ}$ at the centre, then the new magnetic moment is

Magnetism and Matter

Solution:

New magnetic moment,
$M'=\frac{2 M \sin (\theta / 2)}{\theta}=\frac{2 M \sin (\pi / 6)}{\theta / 3}$
$=\frac{2 M \times \frac{1}{2}}{\pi / 3}=\frac{3 M}{\pi}$