Magnetic Field - GCSE Physics Definition

A magnetic field is the invisible area around a magnet where magnetic forces can be felt. It is what makes a magnet able to pull or push other magnets or magnetic materials, like iron. You can think of it like an invisible pattern of lines spreading out from the magnet, travelling from the north pole to the south pole. These closer the lines are together, the stronger the magnetic field. In GCSE Physics, we learn that magnetic fields are important because they help us understand how magnets work, how electric currents can create magnetic fields, and how this technology is used in devices like compasses, motors, and generators.