#### Question

What do you understand by the "resistivity" of a substance?

#### Solution

We know that resistance , `R=(rhol)/A`

So resistivity, `rho=RA/l/`

When the area of cross-section, *A* is 1 m^{2} and the length of the wire, *l* is 1 m, resistance is equal to resistivity.

Resistivity may be defined as the resistance offered by a conductor of length 1 m and area of cross-section 1 m^{2}.

Is there an error in this question or solution?

Solution What Do You Understand by the "Resistivity" of a Substance? Concept: Factors on Which the Resistance of a Conductor Depends.