Both the Capacitors Shown in Figure Are Made of Square Plates of Edge A. the Separations Between the Plates of the Capacitors Are D1 and D2 as Shown in the Figure. a Potential Difference - Physics | Shaalaa.com

A parallel-plate capacitor consists of two square plates, each with a size of L x L, separated by a distance a. The plates are given a charge of Q. Each plate changes only one quantity; the other quantities have their initial values.What is the ratio Et / E; of the final to initial electric field strengths if Q is doubled?Et/E = What is the ratio E/Ej of the final to initial electric field strengths if L is doubled?E/E = What is the ratio Et / Ej of the final to initial electric field strengths