A negligibly small current is passed through a wire of length 15 m and uniform cross-section 6.0 x 10-7 m2. The measured resistance of the wire is 5.0 Ω. The resistivity of the material is :
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A negligibly small current is passed through a wire of length 15 m and uniform cross-section 6.0 x 10-7 m2. The measured resistance of the wire is 5.0 Ω. The resistivity of the material is :