Faraday-Lenz's law was easy when I was in 12th standard. But it became more complex when I jumped to Engineering. Recently when I was studying about inductors and how they oppose changes in currents, I found out that Faraday-Lenz's Law becomes little weird because based on my observation I found out that this law "doesn't work" (frankly speaking)! Here's the story behind my observation:
Suppose you have an AC voltage source of 240 volts peak and 60 Hz frequency connected to an inductor of 10 mH inductance (wire's resistance is negligible so that the impedance is only due to the reactance of the inductor). Now if I switch on the Ac supply, it is found out that the voltage across the inductor is 240 volt peak and the reactance and current through it is 3.7699 ohms and 63.6622 amps peak. The voltage polarity is as shown.
Now if we apply Kirchoff's Voltage Law to this circuit, it works as expected. But then I don't seem to understand that 'how' this inductor opposes current. Because in my opinion if the inductor opposes current then the polarity markings on the inductor should be reversed then only we can say it generates a back emf. But then the Kirchoff's Voltage Law would not work if the polarity markings are reversed.
Now I think I didn't understood the topic of how inductors oppose currents in an AC circuit.
And also if it generates a back emf to generate a back current then where is the back emf and the back current and why it does not affect the voltage across the inductor and the current through it?