In the adjoining figure, capacitors (1) and (2) each have capacitance C. A dielectric of dielectric constant K is inserted between the plates of one capacitor. The total charge flowing through the battery is:

Question

G1 Physics · Accepted Answer

Use charge conservation at the isolated central junction and Q = CV before and after inserting dielectric K. The net battery charge is (K-1)CE/[2(K+1)] flowing from C to B. Hence D.