P4 Electric Circuit

is the sources of energy in an electric circuit.

There are positive (+ve) and negative (-ve) terminals of the battery are connected properly to other parts of the lectric circuits

to controls when an electric current can flow in an electric circuit

The electric current flows if the switch is on and stops if the switch is off

to connect one electrical part to another

Electrical wires are made of thin strips of metal

Most wires are made of copper

produces light and heat in order for the bulb to light up, it has to be properly connected in a circuit

Bulb is made up of a:

-metal filament

-glass case

-metal casing and tip

-Metal filament

Usually made filament is usually made of a metal called tungsten

When an electric current flows through the metal filament it glows and gives off light and heat

the glass case covers the metal filament to prevent it from being damaged

These parts connect the bulb to an electrical circuit

A Closed circuit is one through which an electric current can flow.

There are 2 types of closed circuit:

1. Circuit A

2. Circuit B

An open is one through which an electric current cannot flow.

There are 2 types of open circuit

1. Circuit C

2. Circuit D

Conductor is the materials that allow an electric current to pass through them

Insulator is the materials that do not allow an electric current to pass through them

The examples of electrical conductors are steel paper clip, aluminium foil, copper coins, iron keys, steel cutlery, metal nails, aluminium can

these are the examples of electrical insulator plastic spoon, ice cream stick, glass marble, eraser, plastic ball