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Adding another battery will make a bulb brighter in a circuit.

Circuits and Switches

Build and test simple electrical circuits with switches. Learn how a switch breaks or completes a circuit so a bulb, buzzer, or motor turns on safely.

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Fascinating Fact:

Many simple circuits use a battery, wires, and a bulb. The battery provides the power.

In KS2 D and T, you explore how electrical systems work in models and products. A circuit must form a complete loop for electricity to flow, and a switch lets you control when that loop is open or closed.

Key Terms

Circuit: A complete pathway that electricity can travel around in a loop.
Switch: A part that opens or closes a circuit to stop or start the flow of electricity.
Component: A part used in a circuit, such as a lamp, buzzer, motor, or switch.

Frequently Asked Questions (Click to see answers)

What is a circuit in KS2 design and technology?

A circuit in KS2 D and T is a loop that allows electricity to travel from a power source, through components, and back again so the device can work.

How does a switch work in a simple circuit?

A switch works by opening the circuit to stop the flow of electricity, or closing the circuit to complete the loop so electricity can flow and the component turns on.

Why is my circuit not working even though it looks connected?

A circuit may not work if the loop is not complete, a connection is loose, a wire is broken, the component is faulty, or the power source is flat.

Try These Related Quizzes

1 .

Which of these is NOT a type of switch?

Tilt

Slope

Slide

Press

Can you think of any other types of switches?

2 .

How does a switch turn a bulb off?

By breaking the circuit

By completing the circuit

By removing the bulb

By removing the battery

When a switch is turned off the circuit is broken so electricity cannot flow through and the bulb gets no power

3 .

Which component in a circuit causes something to turn?

Bulb

Wire

Buzzer

Motor

Motors are found inside remote control cars for example

4 .

How does a switch turn a buzzer on?

By breaking the circuit

By completing the circuit

By removing the bulb

By removing the battery

When a switch is turned on the circuit is complete so electricity can flow through and the buzzer gets some power

5 .

What is the source of power in a circuit?

Bulb

Switch

Buzzer

Battery

Batteries can store energy and release it as electricity

6 .

What must a circuit be joined with?

Wires

Metal

Batteries

String

Electrical wires have metal inside them. Most circuits use wires but any metal will do

7 .

What is the purpose of a switch in an electrical circuit?

To turn the power on and off

To turn the power on

To turn the power off

To complete the circuit

Switches can turn power on and off. Think of the light switches at home

8 .

How can you make a bulb brighter in a circuit?

Add another motor

Add another battery

Remove the battery

Use a bigger bulb

The more power, the brighter the bulb

9 .

What is the source of light in a circuit?

Bulb

Switch

Buzzer

Battery

Electricity passes through a bulb and causes it to glow

10 .

The casing for most electrical products should be made of what?

Insulating material

Conducting material

Metal

Paper

Electricity does not pass through an insulating material such as rubber, therefore when you touch the product you do not hurt yourself

Author: Amanda Swift (Primary School Teacher & Educational Content Developer)

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