Electrical System

What is an electrical system?

Is made up of...

Electricity is a form of energy

Path where electricity flows is the electric circuit

Examples of equipment that require electricity to work

Toaster

Oven

Electric Iron

Hairdryer

Lamp

Television

Computer

Energy Source (Battery)

Wires

Switch

Bulb

Has a positive and negative end

Two poles of the battery connected -> Closed Electric Circuit

Usually made of copper

Wires are covered with materials like plastic or rubber

Electric current flows through wires

Allows electric current to pass through

Prevents electric current from leaking out of the circuit

Does not allow electric current to pass through easily

Controls the flow of electric current in a circuit

Either breaks or completes an electric circuit

Switch is open

Switch is closed

A gap or break in the electric circuit

Circuit is complete

Electric component

Consists of

Glass Bulb

Wire

Metal Casing

Filament (tungsten)

Metal Tip

Prevents filament from being damaged

Connects filament to metal tip and metal casing

Connected to other components of the electric circuit

Gives off light and heat when electric current passes through

Connected to other components of the electric circuit

How does electric current flow in a circuit

Closed and Open Circuits

Series and Parallel Circuits

Closed Circuit

Electric current can flow

Open Circuit

Electric current cannot flow

Series Circuit

Only one path for electric current to flow through

Parallel Circuit

More than one path for electric current to flow through

Electrical Conductors and Insulators

Electric Conductors

Electrical Insulators

Good Conductors of electricity

Made of most metals

Gold

Silver

Copper

Made of some liquids

Salt solution

Mercury

Generally good conductors of heat

Non-conductors of electricity

Made of most non-metal

Plastic

Wood

Clay

Glass

Air

Cloth

Paper

Cotton

Prevents electric shocks

Bulb

Electric Current