define resistivity write an expression for the resistance of a substance give the meaning of each symbol which occur s in it
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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/L
Where; R is resistance of the conductor, A iss the area of cross section of the conductor and L is the length of the conductor.
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