The unit of magnetic moment is

Important Questions on Magnetism

EASY

JEE Advanced

IMPORTANT

Complete Study Pack for Engineering Entrances Objective Physics Vol 2>Chapter 4 - Magnetism>Objective Problems [ Level 1 ]>Q 16

A permanent magnet

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JEE Advanced

IMPORTANT

Complete Study Pack for Engineering Entrances Objective Physics Vol 2>Chapter 4 - Magnetism>Objective Problems [ Level 1 ]>Q 17

The SI unit of magnetic permeability is

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JEE Advanced

IMPORTANT

Complete Study Pack for Engineering Entrances Objective Physics Vol 2>Chapter 4 - Magnetism>Objective Problems [ Level 1 ]>Q 18

A short bar magnet placed with its axis at $30°$ with a uniform external magnetic field of $0.16 \mathrm{T}$ experiences a torque of magnitude $0.032 \mathrm{J}$. The magnetic moment of the bar magnet will be

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JEE Advanced

IMPORTANT

Complete Study Pack for Engineering Entrances Objective Physics Vol 2>Chapter 4 - Magnetism>Objective Problems [ Level 1 ]>Q 19

A magnet of magnetic moment $50\hat{\mathrm{i}} \mathrm{A} {\mathrm{m}}^2$ is placed along the $x$-axis in a magnetic field $\overrightarrow{\mathrm{B}}=\left(0.5\hat{\mathrm{i}}+3.0\hat{\mathrm{j}}\right) \mathrm{T}$. The torque acting on the magnet is

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JEE Advanced

IMPORTANT

Complete Study Pack for Engineering Entrances Objective Physics Vol 2>Chapter 4 - Magnetism>Objective Problems [ Level 1 ]>Q 20

A bar magnet of magnetic moment $3.0 \mathrm{A} {\mathrm{m}}^2$ is placed in a uniform magnetic induction field of $2\times {10}^{-5} \mathrm{T}$. If each pole of the magnet experiences a force of $6\times {10}^{-4} \mathrm{N}$, the length of the magnet is

EASY

JEE Advanced

IMPORTANT

Complete Study Pack for Engineering Entrances Objective Physics Vol 2>Chapter 4 - Magnetism>Objective Problems [ Level 1 ]>Q 21

A bar magnet when placed at an angle of $30°$ to the direction of the magnetic field induction of $5\times {10}^{-2} \mathrm{T}$, experiences a moment of couple $25\times {10}^{-6} \mathrm{N} \mathrm{m}$. If the length of the magnet is $5 \mathrm{cm}$, its pole strength is

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JEE Advanced

IMPORTANT

Complete Study Pack for Engineering Entrances Objective Physics Vol 2>Chapter 4 - Magnetism>Objective Problems [ Level 1 ]>Q 22

If a magnet is hanged with its magnetic axis, then it stops in

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JEE Advanced

IMPORTANT

Complete Study Pack for Engineering Entrances Objective Physics Vol 2>Chapter 4 - Magnetism>Objective Problems [ Level 1 ]>Q 23

A magnet of magnetic moment $2 \mathrm{J} {\mathrm{T}}^{-1}$ is aligned in the direction of the magnetic field of $0.1 \mathrm{T}$. What is the net work done to bring the magnet normal to the magnetic field?