In a series circuit connected to a 24 V DC source consisting of two equal resistors of 10 Ω each, what is the output voltage V0 dropped across one of the individual 10 Ω resistors?

If two 2-port networks with impedance parameters Z = [1, 2; 3, 4] Ω and W = [4, 3; 2, 1] Ω are connected in series, find the combined Z21 parameter of the overall network.

An AC circuit has a real power of 600 W and a reactive power of 800 VAR. What is the apparent power of the circuit?