/sci/ - Science & Math » Thread #12397021

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Anonymous Sat 28 Nov 23:13:17 2020 No.12397021 View Reply Original Report

Quoted By: >>12397095 >>12397152

I understand why a capacitor causes voltage to lag current, but why does an inductor cause current to lag voltage?

Doesn't a conductor need to have current running through it while it is passed through a magnetic field to produce an opposing e.m.f?

Anonymous

Anonymous Sat 28 Nov 2020 23:35:24 No.12397095 Report

Quoted By:

>>12397021
> Doesn't a conductor need to have current running through it while it is passed through a magnetic field to produce an opposing e.m.f?
In the case of the inductor powered by AC its setting up its own magnetic field, and the field collapse during the pole reversal is analogous to “passing through it”.

Anonymous

Anonymous Sun 29 Nov 2020 00:04:24 No.12397152 Report

Quoted By:

>>12397021
>Doesn't a conductor need to have current running through it while it is passed through a magnetic field to produce an opposing e.m.f?
no. the magnetic flux through a surface has to be changing in time to cause an emf around the boundary of that surface (faraday's law)

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