Explain the behaviour of a ferromagnetic substance before and after application of external magnetic field.

What is the change in domain structure, when ferromagnetic substance is placed in weak external magnetic field?

Explain the Gauss' law for Magnetic fields.

What are diamagnetic substances? Explain why diamagnetic substances are repelled by external magnetic field ?

Explain domain structure of ferromagnetic substance in the unmagnetised condition.

Explain the behaviour of dielectric slab which is subjected to an external electric field

When a paramagnetic substance is placed in a uniform magnetic field__________.

Explain behavior of current carrying wire in magnetic field

What happens when a diamagnetic substance is placed in a varying magnetic field?

A circular current loop of magnetic moment M is in an arbitrary orientation in an external magnetic field B.The work done to rotate the loop by 30^@ about an axis perpendicular to its plane is

On the basis of domain theory, draw diagrams when ferromagnetic material is i) in unmagnetised condition ii) kept in weak external magnetic field iii) kept in a strong external magnetic field.