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Silver is a good electrical conductor.

# Electrical Circuits

Embark on a journey in KS2 Science with this quiz exploring electrical circuits - the magic behind how they work and their important parts like batteries, switches, and wires.

Electrical circuits are like secret pathways for currents, made of parts connected by wires. Think about all the gadgets in your home – even those using batteries! Thanks to Alessandro Volta's battery in 1800, we have amazing electrical stuff today. With a switch, we get things instantly that our ancestors could only dream of!

Test your knowledge on electrical circuits! Why are wires covered in plastic? What do switches do? Another word for batteries? Find out in this fun quiz!

1.
With which group of items could you not build a complete circuit?
Wires, bulb, cell
Cells, or batteries, are the source of energy in a circuit
2.
Which of these materials would not be a good electrical conductor?
Copper
Glass
Silver
Iron
Most metals are excellent electrical conductors. Some metals, such as aluminium, do not conduct electricity as well as other metals
3.
Why are electrical wires covered with plastic or rubber?
Plastic and rubber are comfortable materials to touch
Smooth materials keep wires from getting tangled
Plastic and rubber are good electrical insulators
Plastic and rubber can be made in different colours so people can tell different leads apart
Covering electrical wires in insulating materials such as rubber and plastic makes the leads safe to touch - an exposed wire is extremely dangerous and should NEVER be touched
4.
What is an electrical circuit?
A collection of electrical equipment
A path around which electrical current flows
A series of conductors and insulators
A light bulb and battery
Electrical current flows in one direction from the negative pole of a battery around a complete circuit to the positive pole of the battery
5.
Why might a circuit fail to work?
It might have a dead battery
It might have two leads connected to the positive pole of the battery and none connected to the negative
It might have a break in the circuit
All of the above
Dead batteries, incorrectly wired leads and breaks in the circuit are just some of the reasons why a circuit might not work
6.
A material which allows electrical current to pass through it is called what?
An insulator
A cell
A connection
A conductor
Metals make good conductors
7.
What symbol is used in a circuit diagram to represent a bulb?
A circle
Two parallel lines: one short and one long
An X inside a circle
The letter M inside a circle
The letter M inside a circle represents a motor
8.
You have made a simple circuit with one bulb. If you wanted to add an extra bulb without the first bulb dimming, what would you need to design?
A series circuit
A parallel circuit
A complex circuit
An incomplete circuit
Unlike a series circuit, the lamps stay bright if you add more in a parallel circuit
9.
Besides cells, or batteries, what is another source of electrical power?
Lightbulbs
Motors
Petrol
Electricity mains
Mains electricity is the most common power source used in homes
10.
What will a circuit with an open switch do?
It will not allow electricity to pass through
It will allow electricity to pass through
It will resist electricity
It will make a good electrical insulator
If the switch is open then there is a break in the circuit. By closing the switch the circuit is made complete