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

One Line Answer

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

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Solution

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). 

Concept: System of Resistors - Resistances in Parallel
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APPEARS IN

ICSE Class 10 Physics
Chapter 7 Electricity
Short Answers | Q 20.2
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