Two large, parallel, conducting plates are 17 cm apart and have charges of equal magnitude and opposite sign on their facing surfaces. An electrostatic force of 4.0 x 10'15 N acts on an electron placed anywhere between the two plates. (Neglect fringing.) (a) Find the electric eld at the position of the electron. (b) What is the potential difference in volts between the plates? {F (a) Number n Units 4} (b) Number n Units