Resistivity of a conductor depends upon
Correct answer: C. both temperature and nature of the material
- A. temperature
- B. nature of the material
- C. both temperature and nature of the material
- D. temperature, length & nature of the material
Explanation
Resistivity (ρ) of a conductor depends on both the temperature and the nature of the material. Different materials have different resistivities, and resistivity also changes with temperature.Incorrect options: (a) and (b) While resistivity can be affected by temperature and the material, respectively, the correct answer acknowledges the influence of both factors. (d) While the length of the conductor can affect its resistance, it doesn't affect resistivity, which is an intrinsic property of the material.
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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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