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A series RLC circuit has inductance L = 12 mH, capacitance C = 1.6 ?F, and...

A series RLC circuit has inductance L = 12 mH, capacitance C = 1.6 ?F, and resistance R = 1.5 ? and begins to oscillate at time t = 0.

a)       At what time t will the amplitude of the charge oscillations in the circuit be 50% of its initial value? (Note that we do not know that initial value.)

b)      How many oscillations are completed within this time?

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