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Homework Statement
A circuit is constructed with a resistor, two inductors, one capacitor, one battery and a switch as shown. The value of the resistance is R1 = 481 Ω. The values for the inductances are: L1 = 281 mH and L2 = 163 mH. The capacitance is C = 85 μF and the battery voltage is V = 12 V. The positive terminal of the battery is indicated with a + sign.
https://www.smartphysics.com/Content/Media/Images/EM/19/h19_LC_energies.png
What is Qmax, the magnitude of the maximum charge on the capacitor after the switch is opened?
Homework Equations
So far I have been trying to find Qmax from these two equations below:
UL = 0.5(L)(I)(I)
UC = 0.5(Q)*(Q)*C
I = V/R
The Attempt at a Solution
So far, I have been assuming that the energy in the capacitor and the energy in the inductor are equal. With that assumption, at first I attempted to set UL = UC, and solve for Q that way, but that answer was wrong.
I'm stumped at the moment. Any suggestions on how to proceed?
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