Electric Circuits

Question 1

What is the unit for measuring electric current?

Revolt · Accepted Answer

ampere

Question 2

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.Which is most likely the analogy that Jason used?

Revolt · Accepted Answer

The cars represent moving charges, and the spilled tires represent an increased resistance that causes the current to decrease.

Question 3

What is the continuous flow of electric charge?

Revolt · Accepted Answer

current

Question 4

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

Revolt · Accepted Answer

It will increase the resistance in the circuit.

Question 5

What is the unit for resistance?

Revolt · Accepted Answer

ohm

Question 6

Which changes would cause an increase in the resistance of a wire? Check all that apply.increasing its temperaturedecreasing its temperatureusing a longer wireusing a shorter wireusing a thicker wireusing a thinner wire

Revolt · Accepted Answer

increasing its temperature; using a longer wire; using a thinner wire

Question 7

Which statement correctly describes the formation of an electric current?

Revolt · Accepted Answer

A voltage causes electric charges to move from higher to lower potential.

Question 8

A wire delivers 12.0 C of charge in 4.0 s.What is the current in the wire?

Revolt · Accepted Answer

3.0 A

Question 9

A current of 6.0 A runs through a circuit for 2.5 minutes.How much charge was delivered to this circuit?

Revolt · Accepted Answer

900 C

Electric Circuits Answers

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