Electrical Circuit 

An electrical circuit is a group of electrical components such as resistors, capacitors, transistors, diodes and inductors which are connected by wires but now the interconnection of electrical components is done using soldering and is known as PCB design. In an electrical circuit, electrons leave a power source, travel along a conductor, pass through a load to do work, and finally return to the source. It is called a circuit because of the circular path through which electrons flow. In an electrical circuit, electrons travel from the negative side to the positive side.