Question

what is electric Current? mention the use
of battery in an electric current write the factors on which the resistance of a conductior depends ​

Answer 1

The resistance of a conductor depends on thickness (cross sectional area of the wire), length and temperature.

Resistivity is defined as the measure of the resisting power of a specified material to the flow of an electric current.

R=ρ*  A/l

where R = Resistance of the conductor

ρ = Resistivity of the conductor

l = length of the conductor

A = Area of cross section

i.e., ρ=R *l/A

Unit of resistivity is Ωm