Question

The zeros of driving point impedance are those frequencies corresponding to ___________ conditions.

(a) current source

(b) open circuit

(c) voltage source

(d) short circuit

The question was posed to me in a national level competition.

Origin of the question is Properties of Driving Point Functions in division S-Domain Analysis of Network Theory

Answer 1

Right answer is (d) short circuit

Explanation: The zeros of driving point impedance are those frequencies corresponding to short circuit conditions as a pole of Z(s) is a zero of I(s) and zero of N(s) is a zero of V(s), it signifies a short circuit.