The values of the parameters in the circuit in Fig. 8.21 are R = 3 H; L = 5 mH; C = 0.25μF...

The values of the parameters in the circuit in Fig. 8.21 are R = 3 H; L = 5 mH; C = 0.25μF; Vdc = 12 V; and a = 50 Assume the switch opens when the primary winding current is 4 A.

a) How much energy is stored in the circuit at t = 0+?

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b) Assume the spark plug does not fire. What is the maximum voltage available at the spark plug?

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c) What is the voltage across the capacitor when the voltage across the spark plug is at its maximum value?