Differential Equations RLC Circuits

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kings13
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Homework Statement



A series RLC circuit has an electromotive force given by E=200e^(-100t) V, a resistor of 80 ohms, an inductor of 0.2 H, and capacitor of 5x10^-6 F. If the initial current and charge on the capacitor are zero, find the current at any time t>0.


Homework Equations



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The Attempt at a Solution



i am not begging for someone to solve the whole problem for me, just to get it started
 
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OK, start by observing that the same current is flowing through all three components (R, L and C) at any time t because they are in series. Call this current [itex]I(t)[/itex].

Let the voltage drop across each of the components be represented by [itex]V_R(t), V_L(t)[/itex] and [itex]V_C(t)[/itex].

Can you now list some equations relating [itex]I(t)[/itex] to each of those voltages?

What can you say about the sum of those three voltages (Kirchoff's laws)?