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If electrons in the matal wire causes resistance Then why is resistance inversely proptional to cross sectional area of wire? Because in my opinion as the area increases atoms increase then electrons increases It implies resistance should also increase Isn't it? |
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Answer» Explanation:- Resistance is DIRECTLY PROPORTIONAL to the length of the wire, and inversely proportional to the CROSS sectional AREA of the wire. ... As a wire gets longer its resistance increases, and as it gets thinner its resistance ALSO increases because its cross sectional area decreases. |
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