ELECTRIC CIRCUIT

An electric circuit is a pathway for the flow of electrons. Electric current is a continuous flow of electrons through a circuit.

- Parts of an electric circuit.
· Generators provide the energy that electrons need in order to move.
· Loads are devices that transform electrical energy into other types of energy that we can use:
~ Light bulbs: produce light.
~ Motors: produce movement.
~ Resistors: produce heat.
~ Bells: produce sound.
· Switching devices are used to direct and interrupt the flow of electic current.
~ Switches: permit or interrupt the flow of electric current.
~ Push buttons: are switches that only function when they are pushed.
~ 3-way switches: permit the flow of electric current through one section of a circuit, while interrupting the flow through another branch.

- Diagrams and symbols.