Explanation- The first step is to find the resistance in the current with 480 volts. The equation for resistance is= voltage/current(amps) So the equation would be: 480/12 Solve: 480/12=40 ohms 40 is the resistance Now you will use this the answer the seconds part. In the second part you are finding the voltage. Equation for voltage: V= current x resistance So the equation would be: 1.5 amps x 40 ohms Solve: 1.5 x 40= 60 volts