A cylindrical disk of radius r = 10.5 cm and thickness H = 4.5 cm is made from a material that has a resistivity \rho = 3.2 \times 10-5 \Omega â‹…m. We wish to determine the resistance across the diameter of the cylinder. Part (a) Integrate over the diameter of the cylinder to write an equation for the resistance in terms of \rho , H, and r.
R = Part (b) Calculate the resistance for the cylinder, in units of m\Omega .