A 20-Ω resistor is in a circuit having three sinusoidal sources. After analyzing the cir...

A 20-Ω resistor is in a circuit having three sinusoidal sources. After analyzing the circuit, it is found that the current through the resistor due to each of the sources is as follows:

a. Use superposition to calculate the resultant current through the resistor.

b. Calculate the power dissipated by the resistor.

c. Show that the power dissipated by the resistor cannot be found by applying superposition, namely,