List of top Physics Questions on Magnetism and matter asked in UP Board XII

Find the formula for the couple acting on a magnetic dipole placed in a magnetic field. On its basis, define magnetic dipole moment.

What is the difference between paramagnetic and diamagnetic substances?

What is the difference between paramagnetic and diamagnetic materials?

By giving the examples, explain the meaning of diamagnetic and paramagnetic materials.

Find the formula for the work done in rotating a magnetic dipole in a uniform magnetic field through an angle \( \theta \). What will be the work done in rotating a magnetic dipole lying parallel to the magnetic field by an angle of \( 180^\circ \)?

Derive the formula for the magnetic field at a point due to a current-carrying straight long conductor with the help of Ampere’s circuital law.

Obtain the formula for the resultant magnetic moment of the two concentric circular coils of radius \( r \), placed perpendicular to each other on passing the same current \( i \).