A magnet of magnetic moment M and pole streng | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(B) The magnetic moment of a magnet is given by $M = m 	imes l$,where $m$ is the pole strength and $l$ is the magnetic length.Case $1$: If the magnet

Vedclass · Accepted Answer

$M/2$

Vedclass · Answer

(B) The magnetic moment of a magnet is given by $M = m 	imes l$,where $m$ is the pole strength and $l$ is the magnetic length.Case $1$: If the magnet is cut along its axis (longitudinally),the new pole strength becomes $m' = m/2$ and the length remains $l' = l$.Therefore,the new magnetic moment $M' = m' 	imes l' = (m/2) 	imes l = M/2$.Case $2$: If the magnet is cut perpendicular to its axis,the pole strength remains $m' = m$ and the new length becomes $l' = l/2$.Therefore,the new magnetic moment $M' = m' 	imes l' = m 	imes (l/2) = M/2$.In both cases,the magnetic moment of each part is $M/2$.

$A$ magnet of magnetic moment $M$ and pole strength $m$ is divided into two equal parts. The magnetic moment of each part will be:

Similar Questions

The force between two unit pole strengths placed at a distance of $1 \, m$ is:

$A$ steel wire of length $l$ and magnetic moment $M$ is bent into a semicircular arc of radius $R$. The new magnetic moment is

$A$ magnet,when placed perpendicular to a uniform magnetic field of strength $10^{-4} \ Wb/m^2$,experiences a maximum torque of $4 \times 10^{-5} \ N \cdot m$. What is its magnetic moment in $A \cdot m^2$?

$A$ bar magnet $AB$ is cut into two equal parts as shown in the figure. One part is kept over the other so that the pole $C_{2}$ is above $C_{1}$. If $M$ is the magnetic moment of the original magnet,the magnetic moment of the combination so formed is

An iron bar of length $L$ has a magnetic moment $M$. It is bent at the middle of its length such that the two arms make an angle of $60^{\circ}$ with each other. The magnetic moment of this new magnet is:

Vedclass Test Series

Exam Paper Generator

Online Exam Module