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6 questions
Which one of the following quantities is equivalent to 1 W?
1 V/A
1 Ω • m
1 V • A
1 V/Ω
A kilowatt-hour is equivalent to
1000 W.
3600 J.
3,600,000 J/s.
3,600,000 J.
A 200-W light bulb is connected across a 100-V dc power supply. What current will flow through this bulb?
0.90 A
0.36 A
0.60 A
2.0 A
A light bulb operating at a dc voltage of 100 V has a resistance of 200 Ω. How much power is dissipated in this bulb?
100 W
60 W
50 W
200 W
When 5.00 A is flowing through an 10.0-Ω device, how much power is being dissipated in the device?
50.0 W
250 W
500 W
2.50 kW
What is the resistance of a 0.100-kW light bulb designed to be used in a 120-V circuit dc?
12.0 Ω
144 Ω
1.2 Ω
0.83 Ω
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