Symbols/ Parts Used In Electricity

Question 1

Lamp:

Answer 1

It produces light when a current is passed through it.

Question 2

Switch:

Answer 2

A switch is a component that can break or make the circuit. An open switch represents a broken circuit and it stops the flow of current through it. A closed switch means the circuit is complete and current can flow through it.

Question 3

Fixed resistor:

Answer 3

A fixed resistor has a defined electrical resistance which is not adjustable.

Question 4

Variable resistor:

Answer 4

A variable resistor has an adjustable resistance.

Question 5

Live wire:

Answer 5

The brown wire in a cable or plug.

Question 6

Impulse

Answer 6

Electrical signal carried by a nerve cell.

Question 7

Earth wire:

Answer 7

The green and yellow wire in a cable or plug.

Question 8

Nerve:

Answer 8

Carries messages around the body.

Question 9

Neutral wire:

Answer 9

The blue wire in a cable or plug.

Question 10

Cable grip:

Answer 10

Part of a plug that holds the cable, and stops the wires being pulled out of the pins.

Question 11

Fuse:

Answer 11

A piece of wire that melts if too much electricity flows through it.

Question 12

Filament:

Answer 12

Thin piece of wire inside a light bulb that glows when electricity flows through it.

Question 13

Insulator:

Answer 13

A material that doesn’t let electricity flow through it.

Question 14

Conductor:

Answer 14

A material that lets electricity flow through it.