For the network of given figure:
a. Find the total impedance ZT and the admittance YT.
b. Find the source current Is in phasor form.
c. Find the currents I1 and I2 in phasor form.
d. Find the voltages V1 and Vab in phasor form.
e. Find the average power delivered to the network.
f. Find the power factor of the network, and indicate whether it is leading or lagging