An electrical circuit is an interconnection of electrical components or a model of such an interconnection, consisting of electrical elements. It consists of a closed loop, giving a return path for the current. It includes a device that gives energy to the charged particles constituting the current, such as a battery, generator, lamps, electric motors, and computers.
The closed circuit through which the magnetic flux is passing is known as a magnetic circuit. Let us take an iron or steel ring and it is wound a number of turns of wire. Now, when the electric current is flowing through the wire, then magnetic flux or lines of force are produced in the ring. The route of these lines of force is known as a magnetic circuit.