1. The problem statement, all variables and given/known data A cylindrical copper cable carries a current of 1300 A. There is a potential difference of 1.6 10-2 V between two points on the cable that are 0.38 m apart. What is the radius of the cable? I=1300A V=1.6e-2 V l=0.38m rho=1.7e-8(resistivity of copper) r=? 2. Relevant equations V=IR Where: V=voltage, I=Current, R=Resistance R=rho* L/r^2pie Where: R= resistance, rho=1.7e-8(resistivity of copper), Length in meters, r=radius 3. The attempt at a solution 1. Find Resistance. V=IR 1.6e-2V=1300A*R R=1.23E-5 ohms then I used: R=rho* L/rpie^2 1.23E-5 ohms=1.7e-8*(0.38m/r^2pie) 2.09e-13=0.38m/r^2pie 6.57e-13=0.38m/r^2 6.57e-13*r^2=0.38m 5.78e11=r^2 r=760333.43m what do I keep doing wrong??