हिंदी

How does the resistance of a wire vary with its area of cross-section?

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प्रश्न

How does the resistance of a wire vary with its area of cross-section?

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उत्तर

Resistance (R) of a wire is inversely proportional to its area of cross-section (A),

`"R" ∝ 1/"A"`

i.e., when the area of cross section increases, resistance decreases, or vice versa.

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