Earth's magnetic field at the equator is approximately `4 xx 10^-5` tesla, `R = 6.4 xx 10^`m,`mu_o = 4pi xx 10^-7` SI unit. Calculate Earth's dipole moment.

The earth's magnetic field at the equator is approximately 0*4G , Estimate the earth's dipole moment.

h_1 = 600 m, R = 6.4 xx 10^6 m. d_1 = ? h_1 = ?

A short magnetic dipole has magnetic moment 0.5 Am^2 . Calculate its magnetic field at a distance of 20 cm from the centre of magnetic dipole on (i) the axis (ii) the equatorial line. [ mu_o = 4pi xx 10^-7 SI units] ?

Find the Magnetic Induction at an axial point 30 cm away from a short magnetic dipole of moment 15 A-m^2 . [ mu_o = 4pi xx 10^-7 SI units]

Calculate the distance from the centre of a short bar magnet of moment 3 A - m^2 on the equatorial line where the magnitude of magnetic induction is 1.92 xx 10^-5 T [ mu_O = 4pi xx 10^-7 SI unit].

The Earth's magnetic field at some place on magnetic equator of Earth is 0.5 xx 10^(-4)T. Consider the radius of Earth at that place as 6400 km. Then, magnetic dipole moment of the Earth is .... Am^(2) (mu=4pixx 10^(-7)TmA^(-1))

A bar magnet has a magnetic moment equal to 5 xx 10^-5 W-m .It is suspended in a magnetic field, which has a magnetic induction equal to 8pi xx 10^-4 tesla . The magnet vibrates with a time period of vibration equal to 15 s.The moment of inertia of the bar magnet is