What happens to resistance as the diameter of a conductor increases?

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Prepare for the Abeka Science Matter and Energy Test 7. Utilize flashcards and multiple choice questions with detailed explanations to boost your comprehension and succeed in your exam!

Multiple Choice

What happens to resistance as the diameter of a conductor increases?

Explanation:
Resistance depends on how much cross-sectional area the conductor has. For a given material and length, resistance is R = ρL/A, so as the diameter—and thus the cross-sectional area A—increases, the resistance decreases. A concrete example: doubling the diameter makes the area four times larger, so the resistance becomes one quarter. Therefore, increasing diameter leads to a decrease in resistance.

Resistance depends on how much cross-sectional area the conductor has. For a given material and length, resistance is R = ρL/A, so as the diameter—and thus the cross-sectional area A—increases, the resistance decreases. A concrete example: doubling the diameter makes the area four times larger, so the resistance becomes one quarter. Therefore, increasing diameter leads to a decrease in resistance.

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