Electric circuit

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

• To make it safe

• To make it look pretty

• To add more energy

To complete a circuit the switch must be

• closed

• open

Two batteries in a circuit make the lights in the circuit brighter than one battery.

• True

• False

If the lights are on, the circuit is

• closed

• open

If the lights are off, the circuit is

• closed

• open

A complete, connected circuit:

• Closed Circuit

• Open Circuit

An incomplete or broken circuit.

• Open Circuit

• Closed Circuit

Which statement is true?

• The light bulb will not light up because the circuit is complete.

• The light bulb will not light up because the circuit is broken.

Why is electrical wiring usually made from copper?

• Because copper conducts electricity

• Because copper is shiny

An incomplete circuit is shown.

To complete the circuit, a wire should be placed from —

• Point A to Point D

• Point B to Point D

• Point B to Point C

• Point D to Point C