Home
Class 11
PHYSICS
A magnet of magnetic dipole moment 4 Am^...

A magnet of magnetic dipole moment `4 Am^(2)` is deflected though `45^(@)` from the direction of a magnetic field of induction `3sqrt(2)" Wb/m"^(2)`. What is the magnitude of the torque on the magnet?

A

4 N-m

B

`8sqrt(2) N-m`

C

12 N-m

D

`12/sqrt(2) N-m`

Text Solution

Verified by Experts

The correct Answer is:
C
`tau=MB sin theta=4 xx3sqrt(2) xx sin 45^(@)`
`=12 sqrt(2) xx1/sqrt(2) =12` N-m
Promotional Banner

Topper's Solved these Questions

  • MAGNETISM

    MARVEL PUBLICATION|Exercise TEST YOUR GRASP|10 Videos

  • MAGNETIC EFFECT OF ELECTRIC CURRENT

    MARVEL PUBLICATION|Exercise TEST YOUR GRASP|10 Videos

  • MEASUREMENTS

    MARVEL PUBLICATION|Exercise TEST YOUR GRASP|10 Videos

Similar Questions

Explore conceptually related problems

What is the direction of magnetic dipole moment?

Magnetic Dipole Moment || Torque

A bar magnet of magnetic dipole moment 8 Am^(2) has poles separated by 0.4 m . Find the pole strength of bar magnet .

A bar magnet of magnetic moment 0.4 Am^(2) is placed in a uniform magnetic field of induction 5 xx10^(-2) tesla. What is the torque acting on the magnet if the angle between the magnetic induction and the magnetic moment is 30^(@) .

A magnet of dipole moment 2Am^(2) is deflected through 30^(@) from magnetic meridian. The required deflecting torque is (B_(H)=0.4xx10^(-4)T)

A magnetised needle of magnetic moment 4*8xx10^-2JT^-1 is placed at 30^@ with the direction of uniform magnetic field of magnitude 3xx10^-2T . What is the torque acting on the needle?

What is the direction of the magnetic dipole moment in a bar magnet?

A magnetic wire of dipole moment 4pi Am^(2) is bent in the form of semicircle. The new magnetic moment is