Electricity Practice Questions

Why electrical wiring usually are covered with a layer of plastic?

• To make it more attractive.

• To help electricity flow along the wire

• To make it safe by keeping electricity in

• To add more energy to the circuit.

Why is electrical wiring usually made from copper?

• Because copper is shiny

• Because copper conducts electricity

• Because copper is not magnetic

• Because copper insulates electricity

A material that does NOT let electricity pass through it is called ...

• An electrical conductor

• An electrical insulator

• An electrical source

• An electric appliance

If the circuit is CLOSED, the switch is _______.

• ON

• OFF

If the electric circuit is OPEN, the switch is ____.

• ON

• OFF

Replace the paper clip with a plastic spoon. What happens?

• The bulb does not light

• The bulb gets dimmer

• The wires get hot

• There is no change

In this circuit, the paperclip will act like a wire because it is

• an insulator

• a conductor

• a resistor

• a switch

Which diagram shows two bulbs in a series?

• 1
• 2
• 3
• 4

This is an example of a(n) ______ circuit

• Series

• Parallel

• Open

• incomplete

Which material could fill in the gap for a circuit to create a complete circuit?

• metal spoon

• rubber ball

• plastic spoon

• construction paper