Planets producing larger magnetic field have larger

The direction of the null points is on the equatorial line of a bar magnet,when the north pole of the magnet is pointing

What is the most accepted scientific explanation for the origin of the Earth's magnetic field?

The vertical component of the earth's magnetic field is zero at a place where the angle of dip is.....$^o$

At a certain location in Africa,a compass points $12^{\circ}$ west of the geographic north. The north tip of the magnetic needle of a dip circle placed in the plane of magnetic meridian points $60^{\circ}$ 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 angle of dip at a certain place on earth is $60^{\circ}$ and the magnitude of earth's horizontal component of magnetic field is $0.26 \, G$. The magnetic field at the place on earth is.....$G$