Meet the circuit

In order to create a circuit we need two main things: conductive elements and electrical components.

A circuit is defined by its components, but without connections between them there is no closed loop, hence no electricity flow, hence no circuit. In order to make these connections, we mostly use metallic elements, such as wires or lines that are electrical conductors, which means they allow electricity flow.

In electronic devices and computers these lines are usually printed on a flat surface.

The parts, such as resistors, power sources and LEDs, listed in the first page are some of the most common electrical components. We are going to learn more about them as we are testing them in real circuits.