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Question
Three capacitors of capacitances 2 pF, 3 pF and 4 pF are connected in parallel. Determine the charge on each capacitor if the combination is connected to a 100 V supply.
Solution
Supply voltage, V = 100 V
The voltage through all the three capacitors is same = V = 100 V
Charge on a capacitor of capacitance C and potential difference V is given by the relation,
q = VC …....(i)
For C = 2 pF,
Charge = VC = 100 × 2 = 200 pC = 2 × 10−10 C
For C = 3 pF,
Charge = VC = 100 × 3 = 300 pC = 3 × 10−10 C
For C = 4 pF,
Charge = VC = 100 × 4 = 400 pC = 4 × 10−10 C
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