Magnetism

Important Question|Magnet|Pole Strength And Magnetic Moment|Magnet In Uniform Magnetic Field|Elements Of Earth's Magnetic Field

Magnetic moment of bar magnet is M. The work done to turn the magnet by 90^(@) of magnet in direction of magnetic field B will be

A magnet is suspended in the magnetic meridian with an untwisted wire. The upper end of wire is rotated through 180^(@) to deflect the magnet by 30^(@) from magnetic meridian. When this magnet is replaced by another magnet, the upper end of wire is rotated through 270^(@) to deflect the magnet 30^(@) from magnetic meridian. The ratio of magnetic moment of magnets is

Magnetic moment of a magnet is

Magnetic length of a bar magnet is

Magnetic field around a magnet is