In the circuit shown in (Figure 1) , C 1 = 1.3 F , C 2 = 2.2 F , C 3 = 2.9 F , a

Question

In the circuit shown in (Figure 1) , C1 = 1.3 F ,C2 = 2.2 F , C3 = 2.9 F , and a voltage Vab= 24 Vis applied across points a and b. After C1 is fully charged, the switch is thrown to the right.

part A. What is the final charge on capacitor C1?

Express your answer to two significant figures and include the appropriate units.

Part B What is the final potential difference on capacitor C1?

Express your answer to two significant figures and include the appropriate units.

Part C What is the final charge on capacitor C2?

Express your answer to two significant figures and include the appropriate units.

Part D What is the final potential difference on capacitor C2?

Express your answer to two significant figures and include the appropriate units.

Part E What is the final charge on capacitor C3?

Express your answer to two significant figures and include the appropriate units.

Part F What is the final potential difference on capacitor C3?

Express your answer to two significant figures and include the appropriate units.

Explanation / Answer

when C1 is fully charged.

Q = C1 V = 1.3 uF x 24 = 31.2 uC

when all three capacitors are connected, all three will have same charge on them.

and Q1 = Q2 = Q3

and Q1 + Q2 + Q3 = Q = 31.2 uC

Q1 = Q2 = Q3 = 10.4 uC

(A) Q1 = 10.4 uC

(B) V1 = Q1 / C1 = 8 volt

(C) Q2 = 10.4 uC

(D) V2 = 10.4 / 2.2 = 4.73 Volt

(E) Q3 = 10.4 uC

(F) V3 = 10.4 / 2.9 = 3.59 Volt

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