State the nature of power factors produced by the following circuits
A) resistive circuit
B) capacitive circuit
C) an inductive circuit
D) circuit at resonance
A) The power factor of a resistive circuit is always 1 (or unity power factor). This means that the current and voltage are in phase, and there is no reactive power.
B) The power factor of a capacitive circuit is leading, meaning that the current leads the voltage. The power factor is between 0 and 1, and there is reactive power that flows from the source to the load.
C) The power factor of an inductive circuit is lagging, meaning that the current lags the voltage. The power factor is between 0 and 1, and there is reactive power that flows from the load to the source.
D) At resonance, the power factor of a circuit depends on the specific characteristics of the circuit components. It can be either leading, lagging, or unity power factor, depending on the configuration and values of the components involved.