Problem 3: using any literature you see fit, describe how a camera works (you can use the book, but also any outside material). feel free to include any sketches and examples. the point is to learn how optical systems are applied in the real life (5 points).

Place several e-field sensors at a few points on different equipotential lines, and look at the relationship between the electric field and the equipotential lines. which statement is true? 1-at any point, the electric field is perpendicular to the equipotential line at that point, and it is directed toward lines of higher voltages. 2-at any point, the electric field is perpendicular to the equipotential line at that point, and it is directed toward lines of lower voltages. 3-at any point, the electric field is parallel to the equipotential line at that point.