The correct answer is: D. All above.
In a circuit containing R, L and C, power loss can take place in all three components.
- In a resistor, power loss is due to the dissipation of heat. This is because the current flowing through the resistor causes a voltage drop across it, which in turn causes the resistor to heat up.
- In an inductor, power loss is due to the eddy currents that are induced in the inductor when current flows through it. These eddy currents cause the inductor to heat up.
- In a capacitor, power loss is due to the dielectric losses that occur when current flows through the capacitor. These dielectric losses cause the capacitor to heat up.
The amount of power loss in each component depends on the resistance, inductance, and capacitance of the component, as well as the frequency of the current flowing through it.
In general, the power loss in a resistor is proportional to the square of the current flowing through it. The power loss in an inductor is proportional to the square of the current flowing through it and the frequency of the current. The power loss in a capacitor is proportional to the square of the voltage across it and the frequency of the current.
The power loss in a circuit can be reduced by using components with lower resistance, inductance, and capacitance. The power loss can also be reduced by using a lower frequency current.