Aman is walking away from a lamppost with a light source h = 4 m above the ground. the man is m = 2 m tall. how long is the man's shadow when he is d = 11 m from the lamppost? [hint: use similar triangles.]

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.