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How Does the Resistance of a Metallic Wire Depend on the Thickness of Wire?

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प्रश्न

How does the resistance of a metallic wire depend on the thickness of wire?

एका वाक्यात उत्तर
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उत्तर

The resistance of a wire decreases with increase in its thickness (R ∝ l/a where a = πr2, the area of cross-section of the wire). 

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