17_Chapter 16 HomeworkCH16 Electrical Energy and Capacitance

# 17_Chapter 16 HomeworkCH16 Electrical Energy and...

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Electrical Energy and Capacitance 51 (b) From Figure 3: ( ) ( ) ( ) = 2.00 F 12.0 V 24.0 C ac ac ac Q C V µ µ = = = 24.0 C ab bc ac Q Q Q From Figure 2: µ = = 3.00 F Thus, the charge on the µ capacitor is 3 = 24.0 C Q µ Continuing to use Figure 2, ( ) 24.0 C = 4. 6.00 F ab ab ab Q V C 00 V µ µ = = ( ) and ( ) 3 24.0 C = 8.00 V 3.00 F bc bc bc Q V V C µ µ = = ( ) ( ) = From Figure 1, ( ) 4 2 = 4.00 V ab V V V = ∆ = ∆ ( ) ( )( ) and 4 4 = Q C 4 4.00 F 4.00 V 16.0 C V µ µ = = ( ( ) ) ( ) 2 2 = Q C 2 V 2.00 F 4.00 V 8.00 C µ µ = = 16.32 (1) 1 2 1 9.00 pF 9.00 pF parallel C C C C = + = = 2 C 1 2 1 2 1 2 1 1 1 2.00 pF series series C C C C C C C C = + = = + Thus, using equation (1),
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