Question

Find out the Z parameter for the following circuit. ​

Answer 1

Answer:

Concept:

Z-parameter equations:

V1 = Z11I1 + Z12I2

V2 = Z21I1 + Z22I2

Calculation:



 which means equivalent resistance seen from 1, 1’ when I2 = 0



Z11 = (1 + 2)||2

By applying voltage division,

V2 (voltage across 2Ω) 

And V1 = I1 × Req 

 by applying current division,



And voltage V1 is across 2 Ω resistor is,

By applying KVL in loop 1,

V2 = 1 × I2 + (I2 – I3) 2