question_answer 7)

Three capacitors of capacitances 2 pF, 3 pF and 4 pF are connected in parallel. (a) What is the total capacitance of the combination? (b) Determine the charge on each capacitor if the combination is connected to a 100 V supply.  

Answer:

(a) Total capacitance                 = C1 + C2 + C3                 = 2 + 3 + 4 = 9 pF.                 (b) Using C = we get q = CV                                  = 2 × 10?10 C                 q2 = C2V                                = 3 × 10?12 × 100                 = 3 × 10?10 C                 q3 = C3V                                = 4 × 10?12 × 100                 = 4 × 10?10C.