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- 1. Multiple Choice
In a magnet the opposite poles will ___________.
attract
repel
- 2. Multiple Choice
The magnetic field of a magnet is ____________ further away from the magnet.
stronger
weaker
- 3. Multiple Choice
What makes an electromagnet stronger?
greater number of loops
smaller number of loops
decreasing the current
decreasing the voltage
- 4. Multiple Choice
electrons have this type of charge
positive
negative
neutral
- 5. Multiple Choice
protons have this type of charge
positive
negative
neutral
- 6. Multiple ChoiceElectricity that flows in a closed path is called apathcurrentcircuit
- 7. Multiple ChoiceThe plastic around the wire isconductorinsulatordecoration
- 8. Multiple ChoiceTwo batteries in a circuit make the lights in the circuit brighter than one battery.truefalse
- 9. Multiple ChoiceTwo types of circuits areparallel and magneticelectromagnetic and seriesseries and parallel
- 10. Multiple ChoiceWhere is the strongest attraction force of the magnet?at the polesin the middleabove the magnetbelow the magnet
- 11. Multiple Choice
Walking across a carpet is a perfect example of charge being transferred by...
contact
induction
static electricity
friction
- 12. Multiple Choice
The current in a hair dryer measures 15.0 Amps. The resistance of the appliance is 8.0 ohms. What is the voltage?
120 V
0.5 V
7.0 V
1800 V
- 13. Multiple Choice
Which of the following represents Ohm’s law?
I = V / R
V = I x R
R = V x I
V = I / R
- 14. Multiple Choice
How many paths through which charge can flow would be shown in a circuit diagram of a series circuit?
two or more
one
none, the circuit is open
more information is needed
- 15. Multiple Choice
If you break a bar magnet in half, each half...
contains one magnetic pole.
becomes a bar magnet with two poles.
becomes unmagnetized.
is only temporarily magnetized.
- 16. Multiple Choice
A temporary magnet that only works when electricity is passed through wires surrounding an iron core is called:
electromagnet
galvanometer
induction
super conductor magnet
- 17. Multiple ChoiceIf the lights are on, the circuit isclosedopen
- 18. Multiple ChoiceTrue or False, Lighting is a form of static electricity.TrueFalse
- 19. Multiple ChoiceWhat is the unit for resistance?VoltsAmperesOhms
- 20. Multiple Choice
What voltage is needed to cause a 50A current flow through a 10Ω resistor?
15V
500V
500 kV
0.2V
- Answer choicesTagsAnswer choicesTags