Two similar bar magnets P and Q,each of magne | vedclass

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

Question

(C) Let the original pole strength be $m$,length be $L$,and magnetic moment be $M = m 	imes L$.Case $1$: Magnet $P$ is cut along its axial line (long

Vedclass · Accepted Answer

Magnetic moment $\frac{M}{2}$

Vedclass · Answer

(C) Let the original pole strength be $m$,length be $L$,and magnetic moment be $M = m 	imes L$.Case $1$: Magnet $P$ is cut along its axial line (longitudinally).Each piece has length $L' = L$ and pole strength $m' = \frac{m}{2}$.The new magnetic moment is $M' = m' 	imes L' = \frac{m}{2} 	imes L = \frac{M}{2}$.Case $2$: Magnet $Q$ is cut along its equatorial line (transversely).Each piece has length $L' = \frac{L}{2}$ and pole strength $m' = m$.The new magnetic moment is $M' = m' 	imes L' = m 	imes \frac{L}{2} = \frac{M}{2}$.Thus,all four pieces obtained have a magnetic moment of $\frac{M}{2}$.

Two similar bar magnets $P$ and $Q$,each of magnetic moment $M$,are taken. If $P$ is cut along its axial line and $Q$ is cut along its equatorial line,all the four pieces obtained have:

Similar Questions

$A$ magnetized wire of magnetic moment $M$ and length $L$ is bent into an arc of a circle subtending an angle of $60^{\circ}$ at the center. The new magnetic moment is:

What does the analogy of a bar magnet's and a solenoid's magnetic field lines suggest?

$A$ permanent magnet:

Give some of the commonly known ideas regarding magnetism.

The following figures show the arrangement of bar magnets in different configurations. Each magnet has a magnetic dipole moment $\vec{m}$. Which configuration has the highest net magnetic dipole moment?

Vedclass Test Series

Exam Paper Generator

Online Exam Module