What describes the area of magnetic force around a magnet?

• A. Magnetic field
• B. Magnetism
• C. Electric field
• D. Ohm

Answer: (A)

The magnetic field describes the region of space around a magnet where magnetic forces can act on charges or on magnetic dipoles. It’s a vector field, usually denoted B, with field lines showing the direction and relative strength of the magnetic influence (lines go from the magnet’s north pole to its south pole). The field is what mediates the force: a moving charge experiences F = q v × B, and a current-carrying wire experiences F = I L × B.

Magnetism is the physical phenomenon itself, not the area around the magnet. The electric field describes regions around electric charges, not magnetic effects, and Ohm is a unit for electrical resistance, not a region of influence.