Circuits are paths where Negative (-) Charges flow toward Positive (+) Charges. The flow of these charges powers item such as lights, buzzers, and electric motors.

Circuits are divided into two classes-Series Circuits and Parallel Circuits.

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Parallel_Circuit.JPG

Series Circuit

Parallel Circuit

A Series Circuit contains only one path for the negative charges to flow from the negative side of the power source (outlet, battery, generator) to the positive side of the power source.

A Parallel Circuit contains two or more paths for negative charges to travel.

Characteristics

Characteristics

Only one path.

One switch will stop the flow of Negative Charges to ALL components (lights, motors, buzzers, etc).

One switch will turn everything off!! (S1, S2)

Each path can have a switch to control only those items on that path. (S1, S5)

A switch can be located to control two paths in a parallel circuit. (S3)

A Master Switch can be located near the power source to control the flow of negative charges to all paths. (S4)