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An 8microF capacitor is connected in series with a 0.5 megaohm resistor. The DC voltage supply is 200V. Calculate the time constant.(a) 1s(b) 2s(c) 3s(d) 4sThe question was asked during an interview for a job.Query is from Discharge of a Capacitor Through a Resistor in chapter Capacitance and Capacitors of Basic Electrical Engineering

Answer»

The correct option is (d) 4s

For EXPLANATION: The time constant is the product of the resistance and capacitance in a series RC circuit.

Therefore, time constant = 8*10^-6*4*10^6=4s.



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