The equivalent capacitance of the combination shown is: Image

Question

G1 Physics · Accepted Answer

From the circuit, the two middle capacitors are short-circuited because both of their terminals are connected to the same pair of conducting nodes. Hence they do not affect the equivalent capacitance. Only the two capacitors marked C in the upper and lower branches remain effective, and they are connected in parallel. Therefore, C(eq) = C + C = 2C Hence option D follows.