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Question
The value of a resistor that carries 2 A when connected to 10 V isA) 2 ohms.
B) 5 ohms.
C) 10 ohms.
D) 20 ohms.
E) more than 20 ohms.
Answer
This answer is hidden. It contains 1 characters.
Related questions
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Which requires more energy?
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B) increasing the temperature of 1 gram of water from 0C to 100C
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In walking barefoot on red-hot coals, providing that bits of coal do not stick to your feet, it would be safer if your feet are
A) wet.
B) dry.
C) either of these
D) none of the above
Q:
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When bringing water to a boil in the mountains, the time needed to reach the boiling point is
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Q:
A good cook knows that the temperature of violently boiling water is
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B) the same as that of simmering water.
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Long ago a runaway greenhouse effect greatly transformed the planet
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A) conduction.
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Q:
When you leave your warm house for an hour or so on a cold day, to save energy you should turn the thermostat
A) down.
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Q:
A good reflector of radiation is a
A) good absorber of radiation.
B) good emitter of radiation.
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Q:
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A) still warm.
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Q:
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A) conduction.
B) convection.
C) radiation.
D) all about equally
Q:
A water-filled paper cup held in a flame will not catch fire because
A) the inside of the paper is wet.
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A) calories.
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D) any or all of the above for special cases
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A) contains.
B) transfers.
C) both of these
D) none of the above
Q:
Heat energy is measured in units of
A) degrees.
B) joules.
C) calories.
D) both joules and calories.