Conductors, Insulators, Circuits Quiz

Which of the following is a good conductor of electricity?

• Rubber

• Copper

• Glass

• Wood

What property makes insulators different from conductors?

• Insulators can hold heat better than conductors.

• Insulators allow electricity to pass through them easily.

• Insulators do not allow electricity to pass through them easily.

• Insulators and conductors are the same.

Which of the following materials is an insulator?

• Aluminum

• Silver

• Plastic

• Iron

What is a closed circuit?

• A circuit that has a gap or break in it.

• A circuit where electricity cannot flow.

• A circuit where electricity can flow uninterrupted.

• A circuit that only works with insulators.

What happens in an open circuit?

• Electricity flows freely.

• The circuit overheats.

• Electricity cannot flow.

• The circuit becomes a superconductor.

Which of the following is not a type of conductor?

• Metal

• Water

• Plastic

• Human body

Why are metals good conductors of electricity?

• They have high resistance.

• They have free electrons that can move easily.

• They are always cold.

• They are magnetic.

What is the main function of an insulator in a circuit?

• To increase the flow of electricity.

• To stop the flow of electricity.

• To protect the circuit from overheating.

• To prevent electricity from escaping the circuit.

Which of the following is a characteristic of a closed circuit?

• It has a power source.

• It cannot power a device.

• It always causes a short circuit.

• It does not have a power source.

What role do insulators play in electrical wiring?

• They conduct electricity to appliances.

• They prevent the wires from touching each other and causing a short circuit.

• They make the electricity flow faster.

• They cool down the wires.