As shown in the figure (http://s19.postimage.org/t3at5ntcz/P062figure.png), C1 =

Question

As shown in the figure (http://s19.postimage.org/t3at5ntcz/P062figure.png), C1 = 1.55-?F, C2 = 2.95-?F, and V = 10.5 V.

a) For the circuit shown in the figure, determine the charge on capacitor C1 when switch S has been closed for a long time.


b) Determine the charge on capacitor C2 when switch S has been closed for a long time.

c) Determine the charge on capacitor C1 when switch S has been open for a long time.


d) Determine the charge on capacitor C2 when switch S has been open for a long time.

Explanation / Answer

Please ask if you have any doubt.I will help you.

a) V1 = 3.5 V ,Q1 = C1V1 = 5.425 C

b) V2 = 7.0 V ,Q2 = C2V2 = 20.65 C

if open :

V1 + V2 = 10.5 V

C1V1 = C2V2

On solving both gives

c) V1 = 6.88 V ,Q1 = C1V1 = 10.664 C

d) Q2 = 10.664 C

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