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Electricity EOC Review
Test Description: Multiple Choice.
Instructions: Answer all questions to get your test result.
1) A material that has a net electric charge because it
A
d. has a direct current.
B
a. discharges.
C
c. has an excess or shortage of electrons.
D
b. has an alternating current
2) Static electricity is the study of
A
all of the above.
B
electric discharges.
C
buildup of charge.
D
electric field.
3) A strong electric field is
A
d. caused by a small quantity of charge.
B
c. caused by a large quantity of charge.
C
a. directed toward a charge
D
b. directed away from a charge.
4) What is a material called that easily carries a current?
A
b. semiconductor
B
d. conductor
C
a. insulator
D
c. electric potential
5) A superconducting material
A
d. has high resistance at low temperatures.
B
c. has no resistance at low temperatures.
C
b. has no resistance at room temperature.
D
a. requires very high current.
6) What does Ohm's law states?
A
c. Voltage equals current divided by resistance.
B
a. Current equals voltage times resistance.
C
b. Voltage equals resistance divided by current.
D
d. Voltage equals current times resistance.
7) Which melts to protect a circuit?
A
a. three-prong plug
B
c. diode
C
b. wiring
D
d. fuse
8) What does "I" represent in the equation P = I x V?
A
b. resistance
B
a. voltage
C
c. current
D
d. kilowatts
9) The output of a diode can be
A
d. alternating current
B
b. a superconductor
C
c. resistance
D
a. direct current
10) Three layers of semiconductor material can form
A
c. either a transistor or a diode
B
b. a diode only
C
d. neither a transistor or a diode
D
a. a transistor only
*select an answer for all questions
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