If two electrically charged objects repel one another, which of the statements must be true?
a.
one object has more electrons and the other has more protons.
b.
the objects do not have strong electrical fields.
c.
the two objects have the same electric charge.
d.
electrons will flow from one object to the other when they touch each other.

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.