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Question
A certain sample carries a current of 4 A when the potential difference is 2 V and a current of 10 A when the potential difference is 4 V. This sample:
A) obeys Ohm's law
B) has a resistance of 0.5 
at 2 V
C) has a resistance of 2at 2 V
D) has a resistance of 25 at 2 V
E) does not have a resistance
Answer
This answer is hidden. It contains 1 characters.
Related questions
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D) is proportional to the square of the distance from us
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Q:
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Q:
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Q:
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Q:
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Q:
For a controlled nuclear fusion reaction, one needs:
A) high number density nand high temperature T
B) high number density nand low temperatureT
C) low number density nand high temperature T
D) low number density nand low temperature T
E) high number density nand temperature T = 0 K
Q:
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Q:
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Q:
A certain nucleus, after absorbing a neutron, emits a and then splits into two alpha particles. The (A, Z) of the original nucleus must have been:A) 6, 2B) 6, 3C) 7, 2D) 7, 3E) 8, 4
Q:
Radioactive polonium, 214Po (Z= 84), decays by alpha emission to:
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Q:
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Q:
Bombardment of 28Si (Z= 14) with alpha particles may produce:
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