Resistors are very basic components of the circuits. Every circuit has a resistor in it. If you connect a bad resistor to your circuit, the circuit will not work properly. A resistor testing is an excellent idea to avoid such situations. If the resistor is good or bad.
RLC Series circuit contains a resistor, capacitor, and inductor in series combination across an alternating current source. The behavior of components can be explained by phasor diagrams, impedance and voltage triangles.
Power Factor (PF) play an important role in average power dissipation in an ac circuit. PF leads to the concept of three different real, reactive and apparent power, which is better explained by Power triangle.
Resistor color coding is the system for representing the rating of the component by marking different color bands over the packing. It is also used for capacitor, inductor, and diode but most commonly for resistors.