Practicing Success

Target Exam

CUET

Subject

Physics

Chapter

Magnetism and Matter

Question:

A magnetic wire is bent at its midpoint at an angle of 60o. If the length of the wire is l and its magnetic moment is M then the magnetic moment of new shape of wire will be-

Options:

2M

M

$\frac{M}{2}$

$\frac{M}{\sqrt 2}$

Correct Answer:

$\frac{M}{2}$

Explanation:

$ \text{Length of the wire become }lcos 60^o$

$ M = m lcos 60^o = \frac{ml}{2} = \frac{M}{2}$