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Three capacitors having capacitances of 8.0 µF, 8.6 µF, and 4.1 µF are connected in series...

Three capacitors having capacitances of 8.0 µF, 8.6 µF, and 4.1 µF are connected in series across a 36-V potential difference.

(A) What is the charge on the 4.1μF capacitor? ( Express your answer using two significant figures )

i tried to find it and my answers was : ( 7.5*10^2 ) , ( 745 ) , ( 17 ) , ( 74 ) , ( 74.2 ) all are wrong :(

(B) What is the total energy stored in all three capacitors? (Express your answer using two significant figures)

(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? (Express your answer using two significant figures)

(D) What is the total energy now stored in the capacitors? (Express your answer using two significant figures)

Thanks alot !

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Answer #1

eg =2(20.7×10° )(10.75)2 = 1.196×10-3 J

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