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Write the Formula of Resistivity - Science and Technology 1

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प्रश्न

Write the formula of resistivity

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उत्तर

Resistance R of a conductor depends on the length ‘l’ and area of cross section ‘A’ of the conductor

`R alpha l`

and `R alpha l/A`

`:. R alpha l/A`

`:. R = rho 1/A`  ...(ρ is constant)

where ρ is called resistivity of the conductor.

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2017-2018 (March)

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