GEOLOGY

Detailed explanation-1: -Magnetic field lines are the imaginary lines around a magnet which gives us the pattern of magnetic field of the magnet. These lines don’t start or end. They form a closed loop. They flow from North pole to South pole outside the magnet, while they flow from South pole to North pole inside the magnet.

Detailed explanation-2: -Magnetic field lines outside of a permanent magnet always run from the north magnetic pole to the south magnetic pole. Therefore, the magnetic field lines of the earth run from the southern geographic hemisphere towards the northern geographic hemisphere.

Detailed explanation-3: -The magnetic field is a zone where the force is active along imaginary lines. From the south magnetic pole to the north magnetic pole, this force has an effect on all magnetized objects, such as the needle of a compass. Under the effect of Earth’s magnetic field, the needle always points toward the north magnetic pole.

Detailed explanation-4: -The magnetic dipole moment is a vector quantity with direction perpendicular to the current loop in the right-hand-rule direction. From south pole to North pole of a bar magnet. The direction of magnetic dipole moment is from south pole to north pole of a bar magnet.