Answer:

What is an electric circuit?

In order for electrons to flow they need a closed circuit. An electric circuit provides a complete, closed path for electricity. The parts of a circuit consist of a load or resistance; wires; and a switch. The source of energy can be a battery, thermocouple, photocell or an electric generator. The load is the part of the circuit that uses the power. The load of the circuit always offers some resistance to the flow of electrons. As a result energy is convert into heat, light or mechanical energy. The switch is an electric circuit is used to prevent the flow of electrons. This is called an open circuit

There are two types of electric circuits, the series and parallel circuit.

Series Circuit

A series circuit there is only one path for the electrons to flow (see image of series circuit). The main disadvantage of a series circuit is that if there is a break in the circuit the entire circuit is open and no current will flow. An example of a series would the the lights on many inexpensive Christmas trees. If one light goes out all of them will.

resistors using a series circuit

Parallel Circuit

In a parallel circuit the different parts of the electric circuit are on several different branches. There are several different paths that electrons can flow. If there is a break in one branch of the circuit electrons can still flow in other branches (see image of parallel circuit). Your home is wired in a parallel circuit so if one light bulb goes out the other will stay on.