Ohm's law is true for:
Correct answer: A. Metallic conductors at low temperature
- A. Metallic conductors at low temperature
- B. Metallic conductors at high temperature
- C. For electrolytes, when current passes through them
- D. For diode when current flows
Explanation
FACT. Ohm's law is only true for metallic conductors at low temperatures.Ohm's law states that the current flowing through a conductor is directly proportional to the voltage applied across it, given that the temperature and other physical conditions remain constant. This relationship holds true for metallic conductors at low temperatures. As long as the temperature remains relatively constant, the resistance of the metallic conductor remains constant, and Ohm's law applies.
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Steady current relates charge flow to potential difference, resistance and resistivity, including how temperature changes a conductor's resistance. Sources with internal resistance have terminal voltage below their emf when delivering current, and maximum power output occurs under a specific load condition rather than at zero resistance.
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