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Answer Posted / Dharmendra Kumar Mourya
Resistivity (ρ) is a fundamental property of a material that quantifies its electrical resistance per unit length and cross-sectional area. To find the resistivity of a material, you need to measure the resistance (R) of a specimen with known geometry (length L and cross-sectional area A). The resistivity can then be calculated using Ohm's law: ρ = R * (A / L).
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