Electric Circuits

Electric Circuits a continuous path in which electrons can flow. *continuous indicates that if it is not complete and continuous, electrons will not flow.

Requirements? What are the components of a Circuit? Electrical Energy ie. battery Conducting Wires ie. copper wire Control Device ie. switch Load ie. light bulb *Remember good conductors are metals ie. Copper wire, vs. insulators like plastic/rubber which surround the copper wire to prevent against discharge to the person holding the cables.

What do these parts do? Load: converts electrical energy into other forms of energy ie. light bulb, motor, heaters, fans Switch: a device in an electric circuit that controls the flow of electrons by opening (or closing) the circuit On- circuit is closed, electrons can flow Off- circuit is open, electrons stop flowing

Conducting Wire: provides a pathway for electrons to flow from one part of a circuit to another Energy Source: provides the electrons for the circuit

Section 12.2 A) read pages 509-510 B) answer questions 3-6 (10 min)

Electric Circuit Symbols (page 551) Copy out table 1 - + Source of Electrical Energy =Electric Cell Electrical Conductor = Connecting Wire Control Device = Switch Load = Lamp

Go back to Activity #1 and Redraw the 4 circuit diagrams!