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| 1. |
define resistivity write an expression for the resistance of a substance give the meaning of each symbol which occur s in it |
| Answer» RESISTIVITY : It is DEFINED as the resistance offered by a cube of a material of side 1 cm when current flows PERPENDICULAR to its opposite faces. Explanation:Resistivity, rho = RA/LWhere; R is resistance of the conductor, A ISS the area of cross section of the conductor and L is the length of the conductor. | |