The region around a magnet in which magnetic force can be expressed is known as

Analyze the question The question asks for the name of the region around a magnet where its magnetic force can be felt or detected.

Explain the concept

• Magnetic field: the region around a magnet where its magnetic influence (force) acts on other magnets or magnetic materials. You can map it with iron filings or a plotting compass.
• Magnetic flux: the total number of magnetic field lines passing through a given area.
• Flux density (B): the flux per unit area, measured in tesla (T) or Wb/m².
• Declination: the angle between geographic north and magnetic north at a place on Earth. It has nothing to do with the region around a magnet.

Solution Check each option against the definition:

• A. Declination is an angle at a location on Earth, so it is wrong.
• B. Flux density is a measure of field strength per unit area, not the region itself, so it is wrong.
• C. Field is the region where magnetic force acts, so it fits.
• D. Flux is the quantity of field lines, not the region, so it is wrong.

Answer The region around a magnet in which magnetic force can be expressed is the magnetic field.

Exam tip Remember "Field = Region, Flux = Lines, Flux density = Lines per area." In WASSCE definition questions, the word region or space almost always points to field.