You and your little brother are rolling toy cars back
and forth to each other across the floor. He is sitting
at x= 0, and you are at x = 4.0 m. You roll a car
toward him, giving it an initial speed of 2.3 m/s,
stops just as it reaches him in 3.0 s.

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.