1. The problem statement, all variables and given/known data You have two metal electrodes, not touching each other. One is a circle and one is like a thin plank. The plank is at a lower electric potential. Draw electric field lines between them, including direction. Draw equipotential lines in the space between the electrodes as well. 2. Relevant equations 3. The attempt at a solution I'm not sure how to do this because I've never drawn electric field lines for things that are not just charged objects. What does the circle being at a lower potential tell you? Does it mean that one object will act like a negative charge and the other like a positive charge? Let's start with that because once I can draw the electric field lines, I think I can draw the equipotential lines (just 90 degrees everywhere to the field lines).