The resistance between ends will be
.

Options

A. `R= (rho L)/(pi(r_2^2 - r_1^2))`
B. `R = (rho L)/(pi r_2^2)`
C. `R = (rho L)/(pi r_1^2)`
D. `R = (rho L)/(pi r_1 r_2)`

Answer

A

Explanation

`R = (rho L)/(pi(r_2^2 - r_1^2))`.