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

# Circuits and Switches

In KS2 D and T, children will be taught a little about electricity. In particular they will look at circuits, and switches, and how we use them to control electricity. This quiz is all about that subject. It also looks at other components of a circuit, in addition to keeping safe when using electricity.

Electrical products work by using circuits and switches. Circuits allow electricity to flow through - and so power - bulbs, motors and buzzers. Switches are used to control circuits. They can break a circuit - and so switch bulbs, motors and buzzers off - or complete a circuit - and so switch them on again. Many products work by using electricity. How many items in your house work by using electricity? Probably more than you think. Count them and see.

Learn more about circuits and how we control them in this D and T quiz.

1. Which component in a circuit causes something to turn?
Motors are found inside remote control cars for example
2. Which of these is NOT a type of switch?
Can you think of any other types of switches?
3. How does a switch turn a buzzer on?
When a switch is turned on the circuit is complete so electricity can flow through and the buzzer gets some power
4. How does a switch turn a bulb off?
When a switch is turned off the circuit is broken so electricity cannot flow through and the bulb gets no power
5. What is the purpose of a switch in an electrical circuit?
Switches can turn power on and off. Think of the light switches at home
6. What is the source of light in a circuit?
Electricity passes through a bulb and causes it to glow
7. What is the source of power in a circuit?
Batteries can store energy and release it as electricity
8. What must a circuit be joined with?
Electrical wires have metal inside them. Most circuits use wires but any metal will do
9. The casing for most electrical products should be made of what?
Electricity does not pass through an insulating material such as rubber, therefore when you touch the product you do not hurt yourself
10. How can you make a bulb brighter in a circuit?
The more power, the brighter the bulb

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