WorksheetsElectrical Conductors & Insulators
Total questions: 12
Worksheet time: 25mins
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
Besides cells or batteries, what is another source of electrical power?
Lightbulbs
Motors
Petrol
Electricity mains
You have made a simple circuit with one bulb. If you want 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
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
A material which allows electrical current to pass through is called ________________.
An insulator
A cell
A connection
A conductor
Which of these materials would not be a good electrical conductor?
Copper
Glass
Silver
Iron
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
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
What does the symbol above represent?
Open switch
Wire
Closed switch
What does the symbol above represent?
Bell
Wire
Cell
With which group of items could you not build a complete circuit?
Crocodile leads, bulbs, switch, buzzer
Bulbs, crocodile leads, cell
Cell, switch, buzzer, crocodile leads
Wires, bulb, cell
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
