A magnetic needle placed in uniform magnetic field has magnetic moment of `2xx10^-2 Am^2`, and moment of inertia of `7.2xx10^7 kgm^2`. It performs 10 complete oscillations in 6s. What is the magnitude of the magnetic field?

A bar magnet of magnetic moment 10 Am^ 2 has a cross sectional area of 2.5 xx1O^-4 m^2 .If the intensity rof magnetisation of the magnet is 10^6 Am^-1 , the length of the magnet is

Determine the pole strength of bar magnet having magnetic length 10 cm and magnetic moment 50 Am^2.

Magnetic dipole moment vecM of the coil, placed in uniform magnetic field of induction vecB does not depend on

A bar magnet made of steel has magnetic moment of 2.5 Am^2 and a mass of 6.6 xx 10^-3 kg .If the density of steel is 7.9 xx 10^3 (kg)/m^3 , find the intensity of magnetisation of the magnet.

A bar magnet of moment of inertia of 500 gcm^2 makes 10 oscillations per minute in a horizontal plane. What is its magnetic moment, if the horizontal component of earth's magnetic field is 0.36 gauss?

A short magnetic dipoles has magnetic moment 0.5 Am^2 . Calculate its magnetic field at a distance of 20cm from the center of magnetic dipole on the axis.

A bar magnet has geometric length 4.8 xx 10^(-2)m . The magnet moment of bar magnet, of pole strength 20A m is?

A bar magnet of mass 120 g, in the form of a rectangular parallelopiped has dimensions l = 40 mm, b = 10 mm and h = 80 mm. With the dimensions h vertical, the magnet performs angular oscillations, in the plane of a magnetic field with period pis . If its magnetic moment is 3.4Am^2 , determine the influencing magnetic field.

Two identical magnetic dipoles of magnetic moments 1*0Am^2 each are placed at a separation of 2m with their axes perpendicular to each other. What is the resultant magnetic field at a point midway between the dipoles?