Purely Inductive Circuit Waveform. Inductive reactance increases with increasing frequency. The angular velocity of an ac circuit is another way of expressing its frequency in units of electrical radians per second instead of cycles per second.
The voltage current and power waveform are shown in blue red and pink colours respectively. Inductive reactance can be calculated using this formula. X l 2πfl.
Phasor diagram and waveform of pure capacitor circuit the red colour shows current blue colour is for voltage curve and the pink colour indicates a power curve in the above waveform.
But by using the voltage as our reference we can also say that the current lags the voltage by one quarter of a cycle or 90 o as shown in the vector diagram below. X l 2πfl. The current in the pure inductive ac circuit lags the voltage by 90 degrees. Sinusoidal waveforms for ac inductance this effect can also be represented by a phasor diagram were in a purely inductive circuit the voltage leads the current by 90 o.
