Circuit Quiz

Look carefully at the circuit. Why won’t the buzzer make a sound?

• There is no cell.

• Because there is no lamp in the circuit.

• The wire needs to connect to each end of the cell.

• There is nothing wrong with the circuit. The buzzer must be broken.

Look carefully at the circuit. Why won’t the lamp light up?

• You need to put another lamp into the circuit.

• The lamp is broken.

• There is a break in the circuit.

• There needs to be a cell in the circuit.

A __________ can be used to complete or to break the circuit.

• wire

• motor

• cell

• lamp

• switch

The lamp lights up when the circuit is __________.

• broken

• incomplete

• complete

• off

The cell or battery is a source of __________ for the circuit.

• light

• energy

• sound

• motion

The motor turns when the circuit is __________.

• broken

• incomplete

• complete

• off

What is an electrical insulator?

• A material that lets electricity flow through it easily.

• A material that you can see through.

• A material that does not let electricity flow through it.

• A material that catches fire easily.

Which material is commonly used as a conductor in electrical circuits?

• Plastic

• Wood

• Copper

• Glass

What happens to the current in a series circuit if one component is removed?

• The current increases.

• The current decreases.

• The current stops flowing.

• The current remains the same.