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- 1. Multiple Choice
Why is electrical wiring usually are covered with a layer of plastic?
To make it look pretty
To help electricity flow along the wire
To make it safe
To add more energy
- 2. Multiple Choice
Why is electrical wiring usually made from copper?
Because copper is shiny
Because copper conducts electricity
Because copper is not magnetic
Because copper insulate electricity
- 3. Multiple Choice
Which of the following materials is an electrical conductor?
Plastic spoon
Silver-colored plastic spoon
copper spoon
wooden spoon
- 4. Multiple Choice
A material that does NOT let electricity pass through it is called ...
An electrical conductor
An electrical insulator
An electrical source
An electric appliance
- 5. Multiple Choice
What is a circuit with several paths for electricity to flow?
conductor
series circuit
parallel circuit
open circuit
- 6. Multiple Choice
What is a circuit that only has ONE path for electricity to flow?
series circuit
closed circuit
parallel circuit
light bulb
- 7. Multiple ChoiceAn incomplete circuit is shown.
To complete the circuit, a wire should be placed from —Point D to Point CPoint B to Point CPoint A to Point DPoint B to Point D - 8. Multiple ChoiceThis circuit has a battery, buzzer, and switch.
When the switch is closed the buzzer will sound because -the switch gives energy to the batterythe buzzer is made of special plasticthe wires are cooled by the surrounding airelectricity can flow in a complete path - 9. Multiple ChoiceWhich of the following can work as an energy source?BatteryLight bulbWireAll of them
- 10. Multiple ChoiceWhich bulbs will light?1 and 22 and 33 and 44 and 2
- 11. Multiple ChoiceChoose the correct sentence.This circuit will work because it is an open circuit.This circuit will work because it is a closed circuit.This circuit will NOT work because it is an open circuit.This circuit will NOT work because it is a closed circuit.
- Answer choicesTagsAnswer choicesTags