Bar magnet

The magnetic moment of a circular orbit of radius 'r' carrying a charge 'q' and rotating with velocity v is given by

If $r$ is the orbital radius and $v$ is the orbital velocity of an electron in a hydrogen atom, then its magnetic dipole moment is

What happens pole strength?

Why unit of pole strength is ampere meter?

What is Coulomb's law in magnetism?

Explain how to differentiate between a magnet and an iron rod when they both look identical.

What is unit Pole?

The magnetic field lines due to a bar magnet are correctly shown in

Is it possible to isolate the poles of a magnet?

Which of the following is/are the properties of magnetic field lines?

The best material to make permanent magnets is

 The surest test for magnetism is a test for repulsion.

Inside a bar magnet, the magnetic field lines

The net magnetic flux through any closed surface, kept in a magnetic field is

$\oint \overrightarrow{B}·d\overrightarrow{s}=0$ equation is not according to the following

$A$ thin bar magnet oscillates with a time period $T.$ If it is cut into two equal pieces along its axis, time period of oscillation of each piece is

The pole strength of poles of a bar magnet of effective length $0.1 \mathrm{m}$ is $40 \mathrm{A}-\mathrm{m}$. What is its magnetic moment in $\mathrm{A}-{\mathrm{m}}^2$?

A uniform magnetic field exists in space in the plane of paper and is initially directed from left to right. When a bar of soft iron is placed in the field parallel to it, the lines of force passing through it will be represented by:

Two lines of force due to a bar magnet:

Two identical magnetic dipoles of magnetic moment $1.0$ ${\mathrm{Am}}^2$ each are placed at a separation of $2 \mathrm{m}$ with their axes perpendicular to each other. The resultant magnetic field at a point midway between the dipoles is,