When linked to the same source, a thick wire will conduct current more readily than a thin wire of the same material.
Because a thin wire has fewer electrons available to conduct the current, its resistance is higher than that of a thick wire. Resistance and the area of a wire's cross section are inversely proportional to one another.
Although there is increased electrical resistance, the tiny wire can nevertheless conduct electricity. The four lane roadway is like the thicker wire. Because there is far less electrical resistance, the lightbulb burns brighter as a result.
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