Question

n
What
a
factors do the resistances
of
conductor depends and also
write the
equation of resistance
of a conductor. Define resistivity
and find the unit of resistivity
from the equation of resistance.​

Answer 1

The resistance of the conductor depends on the following factors: The temperature of the conductor. The cross-sectional area of the conductor. Length of the conductor.

Resistivity,symbolized by the Greek letter rho, ρ, is quantitatively equal to the resistance R of a specimen such as a wire, multiplied by its cross-sectional area A, and divided by its length l; ρ = RA/l.

Thus, in the metre-kilogram-second system, the unit of resistivity is ohm-metre