21_Chapter 16 HomeworkCH16 Electrical Energy and Capacitance

21_Chapter 16 HomeworkCH16 Electrical Energy and...

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Electrical Energy and Capacitance 55 16.38 From ( ) QC , the initial charge of each capacitor is V =∆ () ( ) 10 10.0 Q F 12.0 V 120 C µ == and ( ) 00 xx = = 120 C x Q After the capacitors are connected in parallel, the potential difference across each is , and the total charge of QQ 3.00 V V ∆= 10 = += is divided between the two capacitors as ( ) 10 10.0 Q F 3.00 V 30.0 C 10 120 C 30.0 C Q x and 90.0 C µµ ′′ = =− = Thus, 90.0 C 30.0 F 3.00 V x x Q C V = 16.39 From ( ) , the initial charge of each capacitor is V ( )( ) 1 1.00 Q F 10.0 V 10.0 C and ( )( ) 2 2.00 F 0 0 Q = = After the capacitors are connected in parallel, the potential difference across one is the
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This document was uploaded on 10/20/2011.

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