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

Answers (1)

Given, 3 capacitors connected in parallel with

C_1=2pF

C_2=3pF

C_3=4pF

Supply voltage V=100V

Since they are connected in parallel, the voltage across each capacitor is 100V.

So, Charge on 2pf Capacitor :

Q_1=C_1V=2*10^{-12}*100=2*10^{-10}C

Charge on 3pF Capacitor:

Q_2=C_2V=3*10^{-12}*100=3*10^{-10}C

Charge on 4pF Capacitor:

Q_3=C_3V=4*10^{-12}*100=4*10^{-10}C

Hence charges on Capacitors are 2pC,3pC and 4pC respectively.

 

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