The electrical resistance R of a conductor of length l and area of cross section a is given by R = a ρl where ' ρ ' is the electrical resistivity. What is the dimensional formula for elect

Question

The electrical resistance R of a conductor of length l and area of cross section a is given by R = a ρl ​ where ' ρ ' is the electrical resistivity. What is the dimensional formula for electrical conductivity ' σ ' which is reciprocal of resistivity?

TestHub · Accepted Answer

Dimensional formula for electrical resistivity, ρ = [ ML 3 T − 3 A − 2 ] Dimensional formula for electrical conductivity, σ = ρ 1 ​ is [ M − 1 L − 3 T 3 A 2 ]

Physics - Unit & Dimension Question with Solution | TestHub

Options:

Doubts & Discussion