Correct option is C
The correct answer is: (C). doubled
The resistance R of a conductor is given by the formula:
Where:
- R is the resistance,
- ρ is the resistivity of the material (constant),
- L is the length of the conductor,
- A is the cross-sectional area of the conductor.
From the formula, it is clear that resistance is directly proportional to the length of the conductor. Therefore, if the length L is doubled, the resistance will also double, provided other factors (like material and cross-sectional area) remain constant.
Thus, when the length is doubled, the resistance also doubles.
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