Tee impedances are connected in parallel z1 2 j2 z2 1

Question

Given the equivalent impedance of a circuit can be calculated by the expression

If Z 1= 4 + j10 and Z 2= 12 - j3, calculate the impedance Z in both rectangular and polar forms.

(b) Three impedances are connected in parallel, Z₁= 2 + j2, Z₂= 1 + j5 and Z₃= j6. Find the equivalent admittance Y.

Express the admittance in both rectangular and polar forms.