Question

What is the relation between resistance and resistivity?

Answer 1

Relation between resistance and resistivity:

1. Current is the aggregate flow of electrons through a wire and can be defined as the rate of electron flow. Resistance is defined as an opposition to current flow.
2. Electrical resistivity is a fundamental property of a material that measures how strongly it resists electric current. A low resistivity indicates a material that readily allows electric current. Resistivity is commonly represented by the Greek letter $\rho .$
3. $R=\rho l/A$, where $\rho$is the resistivity, $A$ is the cross sectional area and, $l$ is the length of the conductor.
4. Resistance is directly proportional to the resistivity.