A magnetic needle free to rotate in a vertical plane parallel to the magnetic meridian has its north tip pointing down at `22^(@)` with the horizontal. The horizontal component of the earth's magnetic field at the place is known to be 0.35 G. Determine the magnitude of the earth's magnetic field at the place.

At a certain location in Africa, a compass points 12^(@) west of the geographic north. The north tip of the magnetic needle of a dip circle placed in the plane of magnetic meridian points 60^(@) above the horizontal. The horizontal component of the earth's field is measured to be 0.16 G. Specify the direction and magnitude of the earth's field at the location.

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

In the magnetic meridian of a certain place the vertical component of the earth's magnetic field is 0.3464 G and the dip angle is 30^(@) . The horizontal component of the earth 's magnetic field at this location is

The horizontal component of the earth's magnetic field at a certain place is 2.6 xx 10^(-5) T and the angle of dip is 60^(@) . What is the magnetic field of the earth at this location ?

In the magnetic meridian of a certain place, the horizontal component of the earth's magnetic field is 0.26 G and the dip angle is 60^(@) . What is the magnetic field of the earth at this location ?

A compass needle free to turn in a horizontal plane is placed at the centre of circular coil of 30 turns and radius 12 cm. The coil is in a vertical plane making an angle of 45^(@) with the magnetic meridian. When the current in the coil is 0.35 A, the needle points west to east. (a) Determine the horizontal component of the earth's magnetic field at the location. (b) The current in the coil is reversed, and the coil is rotated 90^(@) about its vertical axis by an the needle. Take the magnetic declination at the places to be zero.

At a certain place the horizontal component of earth's magnetic field is (1)/(sqrt3) times the vertical component. The angle of dip at that place is