by Krishan G

An electric circuit is an electric current that flows continuously. It is formed with the components consisting of conductors, such as wires, load element(s), such as a light bulb or a fan, and a power source, such as a battery. In order for an electric circuit to function properly, an electric circuit needs a source of power, conductors, load elements, conductors, and insulators. There are three different types of electric circuits. There is the series circuit, connecting load together is a series circuit, in the series circuit the electric current of each load in the circuit will be the same, but it will not be as powerful. There is also a parallel circuit. A parallel circuit is when the load elements are connected in just the right way so that the voltage in each is the same. Another type of circuit is a combination of the series and parallel circuits. A combination of both series and parallel circuits is a circuit with the laws of both parallel and series circuits. This circuit both lowers the voltage, and evenly distributes the electricity. Below is a picture of a power source giving off power to many load elements.

kag_complete electric circuit.jpg

Figure 1: Complete Electric Circuit
kag_incomplete electric circuit.jpg

Figure 2: Incomplete Circuit (The light bulb is not lit up)

Insulators protect us from the harmful electric current flowing through a wire. Insulators are usually rubber, and rubber does not conduct electricity, which is why it is not a conductor, and because rubber insulates a conductor, it is an insulator. Insulators keep the electricity in the conductor, where it belongs.

Figure 3: Wires with and without insulators.
A battery is a source of power. A battery is a marvelous tool to use in an electric circuit. The battery contains electrons, which, through conductors, gets passed on to the load elements in a circuit, and then the electric current flows back to the battery, where it originally came from, and then the battery keeps giving off power to the devices.
Figure 4: A triple A battery.

Electric Current: Electrons moving in a path.
Conductors: Items that can conduct electricity.
Load Element(s): Devices that are powered by the electrons.
Voltage: The measure of electricity.
Insulator: An item that does not conduct electricity.
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