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A capacitor is charged to a voltage of 400V and has a resistance of 20ohm. Calculate the final value of the discharge current.(a) 10A(b) 0A(c) Infinity(d) 20AThe question was posed to me in an interview.This intriguing question comes from Charging and Discharging Currents topic in chapter Capacitance and Capacitors of Basic Electrical Engineering

Answer»

Correct option is (d) 20A

The EXPLANATION: In a discharging circuit, the final voltage is equal to ZERO for capacitor. For a RESISTOR, final voltage is 400V.So,final CURRENT = V/R = 400/20 = 20A.



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