Resistance of a conductor depends upon:
Correct answer: C. Length
- A. Temperature
- B. Nature of a conductor
- C. Length
- D. Color
Explanation
The resistance of a conductor is determined by the formula: R = ρ(L/A), where R is resistance, ρ is resistivity, L is length, and A is cross-sectional area. Among the given options, Length is the only correct choice, as it directly affects resistance. Temperature influences resistance but is not a factor in the basic formula. The Nature of a conductor relates to resistivity but does not directly determine resistance in the context of this question. Finally, Color has no relevance to resistance, making it an incorrect option as well.
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About Current Electricity
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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