Ch. 20.2 - Electric Current
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Physics, Science
•
9th Grade
•
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Jeremy Bosquez
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2 Slides • 11 Questions
1
Ch. 20.2
Electric Current
2
3
Multiple Choice
What is electric current?
the amount of force placed on a charge
a continuous flow of electric charge
the amount of friction inside a material
the temperature of a material
4
Multiple Choice
What is an electrical conductor?
a material that allows electric charges to flow through it
a material that does NOT allow electric charges to flow through it
a material that can allow charges to flow through it sometimes, but other times it doesn't
a material that is specifically made out of metal
5
Multiple Choice
What is an electrical insulator?
a material that allows electric charges to flow through it
a material that does NOT allow electric charges to flow through it
a material that can allow charges to flow through it sometimes, but other times it doesn't
a material that is specifically made out of rubber
6
Multiple Choice
True or False? Metals are good conductors
True
False
7
Multiple Select
Mark each material that would be a conductor.
Copper
Plastic
Rubber
Silver
Wood
8
Multiple Select
Mark each material that would be an insulator.
Copper
Plastic
Rubber
Silver
Wood
9
Multiple Select
Select each factor that would affect a material's resistance.
its length
its velocity
its temperature
its thickness
10
Multiple Choice
True or False? Three common voltage sources are batteries, solar panels, and generators.
True
False
11
Multiple Choice
True or False? According to Ohm's law, the voltage in a circuit equals the product of the energy and the resistance.
True
False
12
Fill in the Blanks
Doubling the voltage in a circuit doubles the current if the
Type answer...
13
Multiple Choice
True or False? Doubling the resistance in a circuit will halve the current if voltage is held constant.
True
False
Ch. 20.2
Electric Current
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