Given a system of two parallel conducting plates held at a fixed potential difference, describe what happens to the isolines of the electric potential between them as the distance between them is changed. how does this relate to the electric field strength? a. these lines get closer together the closer the plates are and spread out as the plates are moved farther apart. the closer the isolines are to each other, the greater the field strength. b. these lines spread out the closer the plates are and get closer together as the plates are moved farther apart. the closer the isolines are to each other, the weaker the field strength. c. these lines get closer together the closer the plates are and spread out as the plates are moved farther apart. the closer the isolines are to each other, the weaker the field strength. d. these lines spread out the closer the plates are and get closer together as the plates are moved farther apart. the closer the isolines are to each other, the greater the field strength.