Four capacitors are arranged in the circuit shown in the figure . . . (need the

Question

Four capacitors are arranged in the circuit shown in the figure . . . (need the last 3 parts)

Four capacitors are arranged in the circuit shown in the figure. The capacitors have the values d -29.5 F, C2 = 15.5 F, C3 = 45.5 C4-85.5 F, and the power supply is set at voltage V= 29.5 V C. C. What is the equivalent capacitance of the circuit? Number 39.7 C. What is the charge on capacitor C3? Incorrect See the lower panel for more information Number 340 hat is the potential differ ence across capacitor C4? Number 3.98 What is the potential energy stored in capacitor C2? Number 10.97

Explanation / Answer

here C2,C3 and C4 are in series.

so, 1/C234 = 1/C2 + 1/C3 + 1/C4

1/C234 = 1/15.5 + 1/45.5 + 1/85.5

C234 = 10.18 micro F

this combination is in parallel with C1.

so, Ceq = C1 + C234

= 29.5 + 10.18

= 39.68 micro F <<<<<<<<-----------Answer

charge on C3, Q3 = V*C234

= 29.5*10.18

= 300.31 micro C

= 3*10^-4 C <<<<<<<<-----------Answer

Potentail diffrence across C4, V4 = Q4/C4

= Q3/C4 (here Q2 = Q3 = Q4)

= 300.31/85.5

= 3.51 volts <<<<<<<<-----------Answer

potentail energy stored in C2, U2 = Q2^2/(2*C)

= Q3^2/(2*C2)

= (3*10^-4)^2/(2*15.5*10^-6)

= 2.9*10^-3 J <<<<<<<<-----------Answer

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