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Introductory Physics Homework Help
Why don't voltages add up numerically in an LCR AC circuit?
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[QUOTE="CWatters, post: 6035016, member: 423469"] The instantaneous voltages do "add up". What I mean is that at any instant in time Kirchoff's voltage law can be applied to the circuit. That's does not mean you can add up the _peak_ voltage across each component and get zero.Consider a pendulum. As it swings back and forth it trades PE for KE and back again. At any position or instant of time the PE and KE sum to a constant value. However you cannot add the peak KE to the peak PE and claim to have double because those never occur at the same time. [/QUOTE]
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Introductory Physics Homework Help
Why don't voltages add up numerically in an LCR AC circuit?
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