voltage/charge problem 1. The problem statement, all variables and given/known data Imagine a small metal sphere left by some alien civilization is floating in space. A probe is launched directly at the sphere in order to study it. When the probe is 1000 m from the sphere, it detects a voltage of 110.0 V; and when it’s at 100.0 m it records 10.0 V. What, if any, is the charge on the sphere? 2. Relevant equations I used V = (kq)/r 3. The attempt at a solution Solve for q to get q = V(r/k). Plug in the values for each situation, and get q. The thing is, I get different values of q for each set of values. I must be using the wrong equation...but I can't figure which equation to use that relates charge and volts. Thanks!