Ohm's Law Answers

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A ceiling fan draws a current of 0.625 A and has a voltage of 120 V. The resistance of the ceiling fan, to the nearest whole number, is Ω.

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2
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What is the unit for resistance?

A
volt
B
ampere
C
ohm
D
coulomb
3

What is the continuous flow of electric charge?

A
voltage
B
resistance
C
potential difference
D
current
4

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

A
3.0 A
B
8.0 A
C
16 A
D
48 A
5

A circuit carries a current of 0.64 A when there is a resistance of 50.0 Ω. The voltage applied to the circuit, to the nearest whole number, is V.

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6

A circuit has a resistance of 2.5 Ω and is powered by a 12.0 V battery. The current in the circuit, to the nearest tenth, is A.

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7

In 12 s, a wire delivers 96 C of charge. The current in the wire, to the nearest whole number, is A.

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8

Current 1 of 8.4 A runs for 240 seconds and then stops. Current 2 is 10.5 A.How long does current 2 have to run to deliver the same amount of charge as current 1?

A
88.2 s
B
192 s
C
2016 s
D
21,000 s
9

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?

A
It will decrease the resistance of the circuit.
B
It will increase the voltage of the outlet.
C
It will increase the resistance in the circuit.
D
It will decrease the voltage of the outlet.
10

What is the unit for measuring electric current?

A
volt
B
ampere
C
ohm
D
coulomb

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