The discussion centers on the relationship between instantaneous EMF and back EMF in inductors when connected to an AC source. It is established that while the back EMF generated by the changing magnetic field in an inductor opposes the applied voltage, it does not equate to zero net potential difference (PD). The equation governing this relationship is V = L (di/dt), where V is the voltage across the inductor, L is the inductance, and di/dt is the rate of change of current. This indicates that current can flow despite the presence of back EMF due to the time-varying nature of AC voltage.
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sahil_time said:Imagine an AC source and a pure inductor...if the Instantaneous EMF=Back EMF due to changing Magnetic field in Inductor then how does the current flow?