Two 11cm diameter electrodes 0.50cm apart form a parallel-plate capacitor. The electrodes are attached by metal wires to the terminals of a 15V battery. After a long time, the capacitor is disconnected from the battery but is not discharged.
What are the charge on each electrode(C), the electric field strength inside the capacitor(N/C), and the potential difference between the electrodes after the original electrodes(V) (not the modified electrodes of part b) are expanded until they are 18cm in diameter?
Q=? C
E=? N/C
Delta_V=? V