specific resistance and rho?

Question

We write specific resistance as :
R= rho*l/A
Why "rho" is used for specific resistance?

Answer 1

Lowercase Greek letters are often used for specific versions of extensive quantities. For example, "lambda" for mass per unit length, "sigma" for specific entropy or surface charge density. "rho" is often used when the division is three-dimensional (eg per unit volume). As far as I know it's just convention, but maybe there's a Greek word out there, beginning with "rho," which means "density."

Answer 2

It's an "r" for resistance, except that r is already well known as an abbreviation for radius. As a result, the Greek letter is used instead.

Answer 3

particular resistivity is defined as resistance of cloth having unit length and unit element of bypass area it skill that resistance of a conductor is without delay proportional to length and inversely proportional to element of element of bypass area of the conductor gadgets ohm-cm or ohm-m