Ohm's Law — Quiz Answers

10 verified answers
1
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What effect will the extension cord have on the circuit? Cici uses a long extension cord to plug a lamp into a wall outlet in the next room.

A
It will decrease the voltage of the outlet.
B
It will increase the resistance in the circuit.
C
It will increase the voltage of the outlet.
D
It will decrease the resistance of the circuit.
3

Which is most likely the analogy that Jason used? Jason sees a news report about a traffic jam caused by a truckload of tires that spilled across the road. The next day in class, he uses the traffic jam as an analogy to explain electric circuits to his friend.

A
The cars represent moving charges, and the spilled tires represent an increased voltage that causes the current to decrease.
B
The tires represent moving charges, and the cars represent an increased resistance that causes the current to decrease.
C
The cars represent moving charges, and the spilled tires represent an increased resistance that causes the current to decrease.
D
The tires represent moving charges, and the cars represent an increased voltage that causes the current to decrease.
4

Which equation relates charge, time, and current?

A
I=tΔ⁢q
B
I=Δ⁢q+t
C
I=Δ⁢qt
D
I=Δ⁢q⁢t
5

Which changes would cause an increase in the resistance of a wire? Choose three correct answers.

A
using a thicker wire
B
using a longer wire
C
increasing its temperature
D
decreasing its temperature
E
using a shorter wire
F
using a thinner wire
8

Which statement correctly describes the formation of an electric current?

A
A voltage causes electric charges to move from higher to lower potential.
B
A resistance causes electric charges to move from lower to higher potential.
C
A voltage causes electric charges to move from lower to higher potential.
D
A resistance causes electric charges to move from higher to lower potential.

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