Question

The value of Z1Z2 in the circuit shown below is?

(a) L/C

(b) C/L

(c) 1/LC

(d) LC

The question was posed to me by my school teacher while I was bunking the class.

Origin of the question is Constant-K Low Pass Filter in section Filters and Attenuators of Network Theory

Answer 1

Right answer is (a) L/C

The explanation: Z1 = jωL and Z2 = 1/jωC. So the product Z1Z2 is jωL x 1/jωC = L/C.