Solving Energy Problems: Understanding Capacitors and Voltage

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The discussion focuses on solving energy problems related to capacitors and voltage. A participant mistakenly assumes that all capacitors are in parallel, leading to confusion in calculating energy using the formula E = 1/2*C*V². It is clarified that the circuit configuration is not entirely parallel, prompting a suggestion to redraw the circuit to better identify the series and parallel combinations. This redrawing is essential for correctly applying the relevant equations, such as Q = CV and E = Q²/(2C). Understanding the correct arrangement of capacitors is crucial for accurate energy calculations.
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Homework Equations


Q = CV
E = Q2/(2C)
E = 1/2*C*V2


I thought since they were parallel the voltage across each was the same so E = 1/2*36*106*302 but that gives me .0162 and that's not an option, .0016 is
 
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xpack said:
I thought since they were parallel the voltage across each was the same
They are not all in parallel. Hint: Redraw the circuit to identify the parallel/series combinations.
 

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