Electrical Safety

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Electricity Check Test Answers

Electricity is a flow of electric charges along a wire which is also called a current.

Electricity can be supplied from either a battery or from the mains supply.

The main advantage of electrical energy is that it can be transported over large distances.

Slide 15

Electric Shocks

Electricity is dangerous and can kill!!

An electric shock can:

You can get an electric shock from anything which is plugged in or connected to the mains supply.

Affect your muscles.

Affect your nerves.

Paralyse you.

Stop your heart beating.

Slide 16

Electrical Safety

The wires which carry electricity consist of two parts:

The metal wires.

The plastic coating round the metal wires.

Slide 17

Electrical Safety

The metal wires act as a conductor of electricity.

The plastic coating acts as an insulator which prevents people from being electrocuted.

Conductors are materials which allow electricity to pass through them easily.

Insulators are materials which do not allow electricity to pass through them easily.

Slide 18

Electrical Safety Check Test

The following questions test your understanding of electrical safety so far.

Answer ALL questions in sentences!!

Slide 19

Electrical Safety Check Test

Name three things that an electric shock can do to you?

A wire consists of two parts. Name them and state whether they are a conductor or an insulator of electricity.

Slide 20

Electrical Safety Check Test Answers

Name three things that an electric shock can do to you?

A wire consists of two parts. Name them and state whether they are a conductor or an insulator of electricity.

1. Affect your muscles.

2. Affect your nerves.

3. Paralyse you.

4. Stop your heart beating.

1. The metal wire – conductor.

2. The plastic coating around the metal wire – insulator.

Slide 21

The Plug

Electrical cables allow you to:

Plug appliances into the mains supply.

Draw electricity from the mains supply.

Slide 22

The Plug

Most electric cables normally contain three wires:

Each of these three wire have different colours of insulation.

The live wire.

The neutral wire.