Circuits, conductors and insulators Review

Which of the following materials is a good conductor of electricity?

• Copper

• Wood

What is an insulator?

• A device that stores electrical energy

• A material that does not allow electricity to flow through it easily

Which of the following is an example of an insulator?

• Iron

• Rubber

What is the purpose of a circuit?

• To block electrical current

• To provide a path for electricity to flow

What happens to a circuit when a switch is turned off?

• The circuit generates more electricity

• The circuit is open and electricity cannot flow

Which of the following statements is true about conductors?

• They allow electricity to flow freely

• They only work with batteries

What is the role of a battery in a circuit?

• To insulate the circuit

• To provide the electrical energy needed to power devices

What type of material is typically used to wrap electrical wires for safety?

• Insulator

• Capacitor

Why are metals like copper often used for electrical wiring?

• Because they are good insulators

• Because they are good conductors of electricity

What is a circuit that has only one path for electricity to flow called?

• Open circuit

• Series circuit