The earth's magnetic field at the equator is approximately 0.4G. Estimate the earth's dipole moment.

What are limits of earth's magnetic field?

Write about earth's magnetic field.

The dip at a place is (30^0) and If the vertical component of earth's magnetic field at that point is 7.5×10^−5 T. then what will be the total magnetic field of earth at that point.

Horizontal component of earth’s magnetic field at a place is √ 3 times the vertical component. What is the value of inclination at that place?

A wheel with 25 metallic spokes each 0.4m long is rotated with a speed of 150 rev//min in a plane normal to the horizontal components of earth's magnetic field H_B at a place. If H_E=0.4G at the place, what is the induced emf between the axle and the rim of the wheel?

What is the direction of magnetic dipole moment?