Physics for IGCSE & O level - Magnets And Currents (Section 9 - No. 2)
Which of the following is the best description of a magnetic field?
The force between two magnets.
The region around a magnet where magnetic forces can be detected.
The amount of magnetic material a magnet has.
The material from which a magnet is made.
説明
The region where magnetic forces can be detected.