Question

In the circuit shown below, find the value of Z2.

(a) jωC

(b) 2 jωC

(c) 1/jωC

(d) 1/2 jωC

I had been asked this question during a job interview.

This intriguing question originated from Constant-K Low Pass Filter topic in section Filters and Attenuators of Network Theory

Answer 1

The correct choice is (c) 1/jωC

Best explanation: From the prototype T section and prototype π section shown in figures, we get the value of Z2 is 1/jωC.