Magnetic Field Theory

Magnetic field theory describes the invisible force fields created by magnets and electric currents. A magnetic field can influence materials that are magnetic, like iron, and it extends around the source in a specific direction. These fields are represented by field lines: the denser the lines, the stronger the magnetic force. The Earth itself has a magnetic field, which helps guide compasses. Understanding magnetic fields is crucial in technologies like electric motors, transformers, and data storage, as they play a vital role in how electric charges and magnets interact in our daily lives.