Home
Class 12
PHYSICS
Calculate the magnitude of torque requir...

Calculate the magnitude of torque required to hold a bar magnet of magnetic moment `200Am^2` along a direction making an angle of `30^@` with the direction of uniform magnetic field of `0*36G`.

Text Solution

Verified by Experts

Here, `tau=? M=200 Am^2, theta=30^@`
`B=0*36G=0*36xx10^-4T`
`tau=MB sin theta=200xx0*36xx10^-4sin30^@=3*6xx10^-3N-m`
Promotional Banner

Topper's Solved these Questions

  • MAGNETIC EFFECT OF CURRENT AND MAGNETISM

    PRADEEP|Exercise Conceptual Problems (d)|2 Videos

  • MAGNETIC EFFECT OF CURRENT AND MAGNETISM

    PRADEEP|Exercise Very Short Answer Questions (a)|2 Videos

  • ELECTROSTATICS

    PRADEEP|Exercise ASSERTION-REASON TYPE QUESTIONS|2 Videos

  • OPTICS

    PRADEEP|Exercise Multiple choice questions|1 Videos

Similar Questions

Explore conceptually related problems

What is the magnitude of magnetic force per unit length of a wire carrying a current of 5 A and making an angle of 30^(@) with the direction of a uniform magnetic field of 0.1 T ?

What is the magnitude of magnetic force per unit length on a wire carrying a current of 8 A and making an angle of 30^(@) with the direction of a uniform magnetic field of 0.20 T ?

What is the magnitude of magnetic force per unit length on a wire carrying a current of 8A and making an angle of 30° with the direction of a uniform magnetic field of 0.15T?

What is the magnitude of the magnetic force per unit length on a wire carrying a current of 8 A making an angle of 30^@ with the direction of a uniform magnetic field of 0*15T ?

What is the magnitude of magnetic force per unit length on a wire carrying a current of 8 A and making an angle of 30 with the direction of a uniform magnetic field of 0.15 T?

Derive an expression for torque acting on a bar magnet held at an angle with the direction of a uniform magnetic field.

The work done in rotating a magnet of magnetic moment 2A-m^(2) in a magnetic field to opposite direction to the magnetic field, is