LC circuit polarity change

[Kajunbee]

My question is about the polarity change series lC circuit. From what I've researched polarity swaps when field starts to collapse in lc circuit. What is meant by this. Is it just and indication that the current will continue in same direction resulting in a change in polarity on cap. Or is the change magnetic- I e north - south on core or both. Also if I place a diode in circuit that is biased to conduct on positive side. Will it conduct while magnetic field increases then stop conducting when the field starts to collapse and the polarity changes.

 

[FvM]

The question is very unclear, there's current and voltage polarity, which polarity do you refer to?

You should be able to answer the question yourself if you remember basic properties of L and C:

Inductor V = L*dI/dt
Capacitor I = C*dV/dt

 

[Kajunbee]

Did not realize there was a difference in current and voltage polarity. In this situation would there be a polarity change that effect whether a diode would still conduct when field collapses or block current flow because polarity has changed.

 

[FvM]

I presume you are referring to a setup like below. The diode current stops when it falls to zero.

 

[SK245230]

I don't understand the question but if it's about the magnetic field orientation, it depends on the current that goes through the inductor. (Look the right hand rule)
Here is a gif that shows direction and polarity in LC circuit:
https://en.wikipedia.org/wiki/LC_circuit#/media/File:Tuned_circuit_animation_3_300ms.gif

 

[Kajunbee]

Appreciate the link. It all became clear when I saw the animation. A pictures worth a thousand words as they say. i think I understand the difference between voltage and current polarity now that user Fvm had mentioned previously. Thanks