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- 1. Fill in the Blank
In an electrical wire, the copper core is a ........................... and the two plastic covers are ............................. (ANS form: A, B)
- 2. Multiple Choice
What are the safe ways to work with electricity?
Turn off mains electricity before fixing exposed parts
use exposed cables and broken plugs
Keep electrical appliances out of wet places
put your finger in a socket
not overload an electrical outlet
- 3. Multiple ChoiceWhat is a switch's function in a circuit?to make the current hotter or colderturn on and off the flow of currentthe pathway that current flowsto add more power to the circuit
- 4. Multiple ChoiceThis is the symbol for a _____?switchlightbatterywires
- 5. Multiple ChoiceIs the circuit pictured complete or incomplete?CompleteIncomplete
- 6. Multiple Choice
Which of the following is an insulator?
an eraser
a wire
a penny
a metal spoon
- 7. Multiple Choice
Which of the following is a conductor?
wood
rubber
metal
plastic
- 8. Multiple Choice
Imagine you are creating a circuit. It works and the light bulb turns on. Then you add a piece of plastic to the circuit, and the light bulb does not turn on. We can infer that the plastic is
an insulator
a conductor
an electron
static electricity
- 9. Multiple Choice
If the light bulb turns ON in a circuit, that means the circuit is
open
closed
- 10. Multiple ChoiceIdentify the conductor below.cloth ragplastic bottlegold ring
- 11. Multiple ChoiceThicker wires have _______ resistance than thinner wires.morelessthe same
- 12. Multiple ChoiceElectric current is measured in ______.WattsVoltsAmperes
- 13. Multiple ChoiceWill the light bulb light up if the switch remains open as shown?Yes, because the circuit will be complete.Yes, because the battery will push the electric current.No, because the electric circuit is not complete.No, because the battery will push the electric current.
- 14. Multiple ChoiceTasha tested several items to see if they could conduct electricity. Her data is shown below. What is the best claim she could make from her data?Wood is an insulator.Metal is an insulator.Keys are insulators.Toothpicks are conductors.
- 15. Multiple ChoiceWhat supplies the energy in an electric circuit?light bulbconductorwirebattery
- 16. Multiple ChoiceTwo batteries in a circuit make the lights in the circuit brighter than one battery.truefalse
- Answer choicesTagsAnswer choicesTags