What are circuits.
A circuit is a closed circle that electrons travel through. It has to be complete and closed in order that it works, if its not, electrons wont move. It also needs a source of energy. A battery. There are different types of circuts. They can be series circuits or parallel circuits. A series circuit is where the same current flows through the whole circuit. A parallel circuit is where there is the same voltage around all the circuit, but the current is different depending on the resistance.