Question

A 3,000 pF capacitor is charged to 200 V and then quickly connected to a 50 mH inductor. (a) Determine the maximum energy (in J) stored in the magnetic field of the inductor. J (b) Determine the peak value of the current (in A). A (c) Determine the frequency of oscillation of the circuit (in Hz). Hz

Answer #1

The energy will oscillate between the inductor and the capacitor. Hence the initial maximum energy of capacitor will also be equal to the maximum energy of inductor. Use this to find the required peak value of current as shown below

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