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Characteristics of Electricity - Section 8.3 Quiz
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Which of the following circuit components would offer the least resistance to current?
Copper wire
Motor
Light bulb
Buzzer
Ohm's law describes electrical resistance as a ratio of
voltage to current..
voltage to resistance..
resistance to current.
current to resistance.
Which of the following best describes Ohm's law?
V=IR
R=VI
I=VR
V=R/I
What is the resistance of a flashlight bulb if there is a current of 0.80 A through the bulb when connected to a 6.0 V battery?
7.5 Ω
4.8 Ω
0.13 Ω
6.8 Ω
The current through a motor in a circuit is 1.1 A. If the potential difference across the load is 9.0 V, what is the internal resistance of the motor?
8.2 Ω
9.9 Ω
1 Ω
0.12 Ω
The resistance of an emergency lamp is 12 Ω. If there is a current of 0.75 A through the lamp, what is the voltage across the lamp?
9.0 V
16 V
12 V
0.063 V
A 24 V potential difference is measured across a load that has a resistance of 6.0 Ω. What is the current through this load?
4.0 A
144 A
0.25 A
30 A
An electric mixer has a motor with an internal resistance of 30 Ω. If the mixer is connected to a circuit with a potential difference of 120 V, how much current flows through the mixer?
4.0 A
150 A
0.25 A
3.6 kA
A 12 mA current flows through a 500 Ω lamp. What is the voltage across the lamp?
