Question

Calculate the time constant of a series RC circuit consisting of a 100microF capacitor in series with a 100ohm resistor.

(a) 0.1 sec

(b) 0.1 msec

(c) 0.01 sec

(d) 0.01 msec

I had been asked this question during an interview.

My query is from Capacitance topic in division Capacitance and Capacitors of Basic Electrical Engineering

Answer 1

Correct choice is (c) 0.01 sec

To elaborate: The time constant of a RC circuit= R*C= 100*10^-6*100=0.01 sec.