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Time Response of Reactive Circuits

Q1:

What has the voltage across the resistor decayed to by the end of the pulse in the given circuit?

A 0 V

B 0.75 V

C 5.55 V

D 14.25 V

ANS:B - 0.75 V

Vin = Vc+Vr.
Vr = Vin-Vc.
Vc = Vin*(1-e^(-t/RC)).
Vc = 15*(1-e^((2.82*10^-3)/(0.002*10^-6*470*10^3).
Vc = 14.25V.
Vr = Vin-Vc.

Vr = (15-14.25) = 0.75V.



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