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What are the charge on and the potential difference across each capacitor in Figure P30.64, in...

What are the charge on and the potential difference across each capacitor in Figure P30.64, in which V = 24 V and C1 = 11

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Answer #1


C1 and C2 are in parallel there net capacaitance of C1 and C2 is C1+C2 C12= 11+12 = 23 uF...

C12 and C3 are in series..

Cnet = C12*C3/(C12+C3) = 23*2/(23+2) = 1.84 uF....


net charge q = Cnet*V = 1.84uF*24 = 44.16 uC..

for capacitor C3

therefore charge on C3 = q = 44.16 uC..

potential difference V3 = q/C3 = 44.16uC/2uF = 22.08 V

for capacitor C1 and C2

potential difference V1= V2 = 24-22.08 = 1.92 V

on C1 charge q1 = C1*V1 = 11*10^-6*1.92 = 21.12 uC...

on C2 charge q2 = C2*V2 = 12*10^-6*1.92 = 23.04 uC


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