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