- #1
Kurokari
- 36
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I'm trying to understand the qualitative relationship of voltage and the a.c. through a pure inductor.
My books says that to maintain the current in the inductor, the voltage across the inductor provided by the a.c. supply must be equal to the back emf but in the opposite direction.
I'm quite puzzled as to why the back emf must have the same magnitude as the ac provided, wouldn't that mean that the potential difference is 0 and there will be no current flow?
and if anyone is willing, why is it that when the current is maximum, the voltage is zero? is there any significance physically?( i would prefer this to be explained physically not mathematically )
Thank you :)
My books says that to maintain the current in the inductor, the voltage across the inductor provided by the a.c. supply must be equal to the back emf but in the opposite direction.
I'm quite puzzled as to why the back emf must have the same magnitude as the ac provided, wouldn't that mean that the potential difference is 0 and there will be no current flow?
and if anyone is willing, why is it that when the current is maximum, the voltage is zero? is there any significance physically?( i would prefer this to be explained physically not mathematically )
Thank you :)
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