Question

if the impedance of a system is 4 ohm, calculate its admittance.

(a) 0.25 ohm^-1

(b) 4 ohm^-1

(c) 25 ohm^-1

(d) 0.4 ohm^-1

I had been asked this question in homework.

This interesting question is from Basic AC Parallel Circuits topic in chapter Single-Phase Parallel Networks of Basic Electrical Engineering

Answer 1

Correct choice is (a) 0.25 ohm^-1

For explanation: We know that: Y=1/Z.

Substituting the value of Z from the question, we get Y = 1/4 = 0.25 => Y= 0.25 ohm^-1.