JAMB - Physics (2005 - No. 28)
The north pole of a magnet can never be separated from the south pole because of the property knowledge as?
magnetic octopole
magnetic monopole
magnetic dipole
magnetic quadrupole
解释
Magnetic poles always exist in pairs. It is not possible to produce just an isolated north pole or an isolated south pole. If a bar magnet is broken into two pieces, each piece will have a north and south pole.