Will upvote! multiple choice!
1. the unit for current is
a) amperes
b) volts
c) ohms
2. the unit for resistance is
a) amperes
b) volts
c) ohms
3. the unit for electromotive force is
a) amperes
b) volts
c) ohms
4. electricity is the flow of
a) energy
b) electrons
c) electromotive force
5. an example of an electric insulator is
a) steel.
b) water.
c) dry air.
d) aluminum.
6. properties that affect the resistance of a material include its
a) width.
b) length.
c) temperature.
d) all of the above
7. if a wire with a resistance of 4 ohms is connected to a 12-volt battery, how much current is flowing through the wire?
a) 48 amps
b) 16 amps
c) 4 amps
d) 3 amps
8. batteries produce electrical energy by
a) moving electrodes.
b) chemical reactions.
c) thermal transfer.
d) nuclear fusion.
9. which of the following materials is an electric conductor?
a) copper
b) rubber
c) plastic
d) wood