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प्रश्न
Write down an expression for the resistance of a metallic wire in terms of the resistivity.
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उत्तर
Length of the cable wire = l
Then, `R=l/A`
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संबंधित प्रश्न
If the equivalent resistance is to be increased, then the number of resistances should be connected in
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Find the equivalent resistance between points A and B.

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