1. The problem statement, all variables and given/known data A wire of total length 34.00 m, consists of equal lengths of Cu followed by Al, both having the same diameter of 0.80 mm. A voltage difference of 86.0 V is placed across the composite wire. What is the current flowing in the wire? Use rho=1.72x10-8 ohm-m for the resistivity of copper and rho=2.82x10-8 ohm-m for the resistivity of aluminum. 2. Relevant equations RT = RCu + RAl R = rho*L/(pi*r2) R = V/I 3. The attempt at a solution Solve R = rho*L/(pi*r2) for both Cu and Al and add together for RT (34*1.72*10^(-8))/(pi*.04^2) + (34*2.82*10^(-8))/(pi*.04^2) = 0.000307089463 I = V/RT 86/0.000307089463 = 280048.684 ohm Keep getting the wrong answer, what am I doing wrong?