When the length of the conductor is doubled and the area of cross-section remains the same then its resistance
Correct answer: B. Will be doubled
- A. Remains the same
- B. Will be doubled
- C. Will become half
- D. Will increase by four times
Explanation
The resistance of a wire is directly proportional to its length and inversely proportional to its cross-sectional area. The resistance of a conductor, or circuit element, generally increases with increasing length. And decreasing area.
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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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