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Imagine you have a circuit that consists of an open switch, a 0.020 F capacitor, a...

Imagine you have a circuit that consists of an open switch, a 0.020 F capacitor, a 0.090 H inductor, and a 4.00 Ω resistor all in series. The capacitor was charged all the way up with a 9.0 V battery before the capacitor was placed into the circuit and the battery was removed completely. If the switch is closed (completing the circuit) at t=0 s, find the energy stored in the magnetic field within the inductor when t = 30.0 ms.

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