Inductive Circuit Waveform. The current in the pure inductive ac circuit lags the voltage by 90 degrees. An inductor consists of a coil of wire wound around an iron or non magnetic air core.
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In the following circuit the supply voltage is defined as. The applied voltage must be equal and opposite to the self induced emf at all times. Phasor diagram and waveform of pure inductive circuit.
In other words the higher the frequency the more it opposes the ac flow of electrons.
This way a circuit containing many chokes coils and resistors can be easily reduced down to an impedance value z comprising of a single resistance in series with a single reactance z 2 r 2 x 2. The current in the pure inductive ac circuit lags the voltage by 90 degrees. Xl ωl 2πfl since ω 2πf where xl is the inductive reactance in ohm s. L is the inductance of the coil in henry.
