PART A PART B What is the total energy stored in all three capacitors? PART C Th

Question

PART A

PART B

What is the total energy stored in all three capacitors?

PART C

The capacitors are disconnected from the potential difference without allowing them to discharge. They are then reconnected in parallel with each other, with the positively charged plates connected together. What is the voltage across each capacitor in the parallel combination?

PART D

What is the total energy now stored in the capacitors?

Three capacitors having capacitances of 9.0 mu F capacitor? PART B What is the total energy stored in all three capacitors? PART C The capacitors are disconnected from the potential difference without allowing them to discharge. They are then reconnected in parallel with each other, with the positively charged plates connected together. What is the voltage across each capacitor in the parallel combination? PART D What is the total energy now stored in the capacitors? mu F are connected in series across a 34-V potential difference. PART A What is the charge on the 4.8?F mu F , and 4.8 mu F , 8.8

Explanation / Answer

A)

1/Cnet = 1/9 + 1/8.8 + 1/4.8

Cnet = 2.3 micro F

Qnet = V*Cnet

= 34*2.3

= 78.2 micro C <<<<<<<<<<--------Answer

all the capaciotros have same charge on them. becuase they are connectec in series.

B)

u = 0.5*Cnet*V^2

= 0.5*2.39*10^-6*34^2

= 1.38*10^-3 J <<<<<<<<<<--------Answer

C) when they are connected in prallel they will have potentail difference across them

Qnet = 3*Q_series

= 3*78.2*10^-6

= 234.6 micro C

Cnet = 9+8.8+4.8

= 22.6 micro F

V = Qnet/Cnet

= 234.6/22.6

= 10.38 volts <<<<<<<<<<--------Answer

D) 0.5*Cnet*V^2

= 0.5*22.6*10^-6*10.38^2

= 1.217*10^-3 J <<<<<<<<<<--------Answer

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