A bar magnet of mass 100 g, length 7.0 cm, width 1.0 cm and height 0.50 cm takes `pi/2` seconds to complete an oscillation in an oscillation magnetometer placed in a horizontal magnetic field of `25 muT`. (a) Find the magnetic moment of the magnet. (b) If the magnet is put in the magnetometer with its `0.50cm` edge horizontal, what would be the time period?

A bar magnet of length 5cm, width 3cm and height 2cm takes 5s to complete an oscillation in viberation magnetometer placed in a horizontal magnetic field of 20muT . The mass of this bar magnet is 250g(a). Find the magnetic moment of the magnet. (b) If the magnet is put in the magnetormer with its 0.5cm edge horizontal, what would be the new time period?

A bar magnet takes pi/10 second to complete one oscillation in an oscillation magnetometer. The moment of inetria of the magnet about the axis of rotation is 1.2 xx 10^(-4) kg m^2 and the earth's horizontal magnetic field is 30 muT . Find the magentic moment of the magnet.

Time period of a bar magnet oscillating in earth's magnetic field is T. Its magnetic moment is M. Now, a bar magnet of magnetic moment 2M is brought near it. The new time period will be

The magnetic moment of a length 10 cm and pole strength 4.0 Am will be

A bar magnet makes 40 oscillations per minute in an oscillation magnetometer. An identical magnet is demagnetized completely and is placed over the magnet in the magnetometer. Find the time taken for 40 oscillations by this combination. Neglect any induced magnetism.

The magnetic moment of a bar magnet is 2A m2. if the magnetic length of the bar magnet is 5 cm, determine the force acting on it an external magnetic field of strength 0.6 T.

Each pole of magnet of length 20 cm in a magnetic field of induction 0.2 T experiences a force 20 N. The magnetic moment of magnet is

The needle of a deflection magnetometer deflects through 45^@ from north to south when the instrument is used in Tan-A position with a magnet of length 10cm placed at a distance of 25cm. (a) Find the magnetic moment of the magnet if the earth's horizontal magnetic field is 20 muT . (b) If the magnetometer is used in Tan-B position with the same magnet at the same separation from the needle, what will be the deflection?

A short magnet produces a deflection of 37^@ in a deflection magnetometer in Tan-A position when placed at a separation of 10cm from the needle. Find the ration of the magnetic moment of the magnet to the earth's horizontal magentic field.

A bar magnet of length 1cm and cross-sectonal area 1.0 cm^2 produces a magnetic field of 1.5 xx 10^(-4) T at a point in end-on position at a distance 15cm away from the centre. (a) Find the magnetic moment M of the magnet. (b) Find the magnetization I of the magnet. (c) Find the magnetic field B at the centre of the magnet.