# Recognise Electrical Hazards

In this worksheet, students will learn about the correct use of electricity.

Key stage:  KS 3

Curriculum topic:   Physics: Electricity and Electromagnetism

Curriculum subtopic:   Current Electricity

Popular topics:   Physics worksheets, Electricity worksheets

Difficulty level:

#### Worksheet Overview

Electricity can be very dangerous if not used properly. At home, mains electricity is used, which has a much higher voltage than the cells used at school. It can be extremely dangerous.

The general safety rules when handling electricity are:

-  Never touch the metal parts of plugs (see a plug inserted into a socket in the diagram)
-  Never poke things into sockets
-  Keep water away from electrical appliances (water is a conductor of electricity)

In science lessons:

-  Always show your circuits to your teacher before switching them on
-  Switch the current off before changing your circuit

Electricity can be controlled by using a switch. When the switch is open, there is a gap in the circuit, so electric current cannot flow. When we close the switch, there is a complete circuit for the current to flow around. The diagram shows a complete circuit with an open and then a closed switch. In science, we call the battery a cell, but actually a battery consists of many cells in a row.

All wires are metal because metals conduct electricity, but they are covered in plastic to insulate us from the electricity and so avoid accidents. Have a look at the wires this plug contains:

You can see the multi-coloured wires for earth (yellow/green), live (brown) and neutral (blue).  As almost all appliances come with a fitted and sealed plug, it's not as vital to learn how to wire a plug as it once was.

Let's have a look at the questions now.

### What is EdPlace?

We're your National Curriculum aligned online education content provider helping each child succeed in English, maths and science from year 1 to GCSE. With an EdPlace account you’ll be able to track and measure progress, helping each child achieve their best. We build confidence and attainment by personalising each child’s learning at a level that suits them.

Get started

#### Popular Science topics

Try an activity or get started for free

• National Tutoring Awards 2023 Shortlisted
• Winner - Private Tutoring
• Finalist
• Winner - Best for Home Learning / Parents