The resistance increases as the diameter of the wire increases. Also, the voltage is constant and the current increases.
Resistance of a wire
The term resistance refers to the opposition offered to the flow of current by circuit elements. The resistance of a wire depends on its;
- length
- Cross-sectional area
Now, the diameter of the wire determines its cross sectional area. The resistance increases as the diameter of the wire increases. The voltage is constant and the current increases since voltage and current are directly proportional to each other. The correct answer therefore is option A.
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