Electric Current Quiz
Quiz
•
Science
•
8th Grade
•
Medium
+4
Standards-aligned
Scott Stoddart
Used 7+ times
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33 questions
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1.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
The unit for the rate of current is the
ampere
volt
ohm
joule
Answer explanation
The unit for the rate of current is the ampere, which measures the flow of electric charge. The other options—volt, ohm, and joule—represent voltage, resistance, and energy, respectively, not current.
2.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
All electrical devices contain electric
acid
gears
circuits
motors
Answer explanation
All electrical devices contain circuits, which are essential for the flow of electricity. Unlike acid, gears, or motors, circuits are the fundamental components that enable electrical devices to function.
3.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Potential electric current can be converted into
heat
matter
waste
food
Answer explanation
Potential electric current primarily converts into heat due to resistance in conductors, which generates thermal energy. Other options like matter, waste, and food are not direct conversions of electric current.
Tags
NGSS.MS-PS3-4
4.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Which of the following does not determine the resistance of a wire?
temperature
diameter
length
color
Answer explanation
Color does not affect the resistance of a wire. Resistance is determined by temperature, diameter, and length, which influence how easily current can flow through the material.
5.
DROPDOWN QUESTION
3 mins • 1 pt
The amount of charge that passes through a wire in a given period of time is the rate of electric (a) .
current
voltage
resistance
power
Answer explanation
The rate of electric current refers to the amount of charge that flows through a wire over time. Current is measured in amperes, making it the correct term to fill in the blank.
6.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
The electrons in conductors move about ________________ freely than the electrons in insulators.
more
less
equally
Answer explanation
The correct answer is 'more' because electrons in conductors can move freely due to the presence of free charge carriers, while in insulators, electrons are tightly bound to their atoms and cannot move freely.
7.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Charges flow through wires because of differences in electric _________________ .
current
field
potential
resistance
Answer explanation
Charges flow through wires due to differences in electric potential, which creates an electric field that drives the current. Thus, the correct answer is 'potential'.
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