chp36_12 - PHY2061 R. D. Field An LRC Circuit Switch Q + +...

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PHY2061 R. D. Field Department of Physics chp36_12.doc University of Florida An LRC Circuit At t = 0 the switch is closed and a capacitor with initial charge Q 0 is connected in series across an inductor and a resistor. The initial conditions are Q(0) = Q 0 and I(0) = 0 . Moving around the circuit in the direction of the current flow yields Q C L dI dt IR −− = 0 . Since I is flowing out of the capacitor, Id Q d t =− / , so that dQ R L LC
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