A proportionality factor characteristic of different substances equal to the resistance that a centimeter cube of the substance offers to the passage of electricity, the current being perpendicular to two parallel faces. It is defined by the expression:
where R is the resistance of a uniform conductor, l is its length, A is its cross-sectional area, and ρ is its resistivity. Resistivity is usually expressed in ohm-centimeters (Giambattista A, Richardson R, Richardson RC, Richardson B (2003) College physics. McGraw-Hill Science/Engineering/Math, New York).
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Gooch, J.W. (2011). Resistance, Specific (Resistivity). In: Gooch, J.W. (eds) Encyclopedic Dictionary of Polymers. Springer, New York, NY. https://doi.org/10.1007/978-1-4419-6247-8_9962
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