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- 1. Multiple Choice
Like poles of a magnet do what?
repel
attract
nothing
- 2. Multiple ChoiceWhat is a wire in a circuit wrapped around an iron core called?electromagnetgeneratorelectric motor
- 3. Multiple ChoiceUnlike poles of a magnet do what?repelattractnothing
- 4. Multiple ChoiceWhat do you make if you wrap a current-carrying wire around an iron bolt?electromagnetelectric motorgenerator
- 5. Multiple ChoiceA piece of nickel will be attracted toonly the north pole of an electromagnetonly the south pole of an electromagneteither pole of an electromagnetthe iron core of an electromagnet
- 6. Multiple ChoiceWhat is voltage?a measure of electric currenta kind of static elecricitya kind of current electricitya measure of potential energy difference
- 7. Multiple ChoiceWhat is the purpose of an iron core in an electromagnet?to hold the loops of wire in placeto make the magnetic force strongerto change the direction of the electric currentto change the direction of the magnetic force
- 8. Multiple ChoiceEach time a lightbulb is added to a series circuit, the other bulbs in the circuitget brighterget dimmerstay the same brightnessrelease more heat
- 9. Multiple ChoiceA group of lights are connected in a parallel circuit. One of the lights is removed. The rest of the lights willget brighterget dimmergo outnot change
- 10. Multiple Choice
In which of the following circuits will all of the remaining light bulbs go out if bulb 3 burns out?
- 11. Multiple Choice
Which of the following is an example of a resistor?
battery
light bulb
wire
switch
- 12. Multiple ChoiceA series circuit has ____ path(s) that the electric current can take.OneTwoThreeFour
- 13. Multiple ChoiceWhat is a Parallel circuit?Has only one pathHas more than one pathAllows energy to travel through easilyHas only one light bulb
- 14. Multiple ChoiceThe flow of electricity through a conductor is called...resistancevoltagecurrentsource of electric current
- 15. Multiple ChoiceWhat slows down the flow of electricity in a circuit?resistancevoltagecurrentsource of electric current
- 16. Multiple ChoiceThis is the symbol for a _____?LampWater wheelLoudspeakerMotor
- 17. Multiple ChoiceWhich way do electrons flow?Positive to NegativeNegative to Positive
- 18. Multiple ChoiceWhat is the unit of measurement for currentOhm'sAmperesVolts
- 19. Multiple ChoiceWhat it the formula to find voltage.I= V/RR=V/IV= I x R
- 20. Multiple ChoiceWhat is the unit of measurement for resistance?AmperesOhm'sVolts
- Answer choicesTagsAnswer choicesTags