Helmholtz's Law

Helmholtz's Law states that when a magnetic field is created by an electric current, the magnetic lines of force form closed loops, with no beginning or end. Specifically, the law describes how magnetic fields have both a direction and a circular pattern around current-carrying wires or magnetic materials. It highlights that magnetic fields are always continuous loops, and the strength of the field depends on the current and the magnetic material. Essentially, it reveals the intrinsic relationship between electricity and magnetism, showing that a magnetic field is a continuous, closed loop generated by moving electric charges.