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Energy and Power

Energy and Power
For 12 V and 40 mA, the power is

All of these
0.480 W
480 mW
480,000 µW

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Energy and Power
If it takes 400 ms to use 12,000 J of energy, the power is

3 W
30 W
30 kW
300 kW

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Energy and Power
A 33 half-watt resistor and a 330 half-watt resistor are connected across a 12 V source. Which one(s) will overheat?

330
33
both resistors
neither resistor

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Energy and Power
When the pointer of an analog ohmmeter reads close to zero, the resistor being measured is

reversed
open
shorted
overheated

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Energy and Power
How many watt-hours represent 65 W used for 18 h?

11,700 Wh
11.7 Wh
1,170 Wh
117,000 Wh

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Energy and Power
At the end of a 14 day period, your utility bill shows that you have used 18 kWh. What is your average daily power?

12.85 kWh
252 kWh
535 kWh
1.286 kWh

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