JEE Mains Model Paper 7
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Question : 6 of 90
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When 5V potential difference is applied across a wire of length 0.1 m, the drift speed of electrons is2.5 × 10 − 4 m s − 1 . If the electron density in the wire is 8 × 10 28 m − 3 , the resistivity of the material isclose to :
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