How does the resistance of a wire change when its diameter is one-third ?
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Explanation:
As the resistance of a wire is inversely proportional to the square of the diameter of a conducting wire if its diameter is tripled its resistance becomes 9th part of the previous resistance.
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Answer:
The resistance of a wire is directly proportional to its length and inversely proportional to its area (or square of inverse of diameter)
Explanation:
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