Electrostatic Potential And Capacitance

Question

Three capacitors each of capacitance 9 pF are connected in series:
(a) What is the total capacitance of the combination?
(b) What is the potential difference across each capacitor if the combination is connected to a 120 V supply?

Solution

Given, three capacitors of value

C_{1} = C_{2} = C_{3} = 9 pF = 9 \times 10^{- 12} F

(a) Since the capacitors are connected in series.

since, the capacitances are equal so