AC voltage from single magnetic pole

[nix85]

It is called an abstraction.  In this case an abstraction of the primary as a varying flux source only.


This means, that if you inadvertently acquire the knowledge of the AC voltage or amplitude or frequency or phase in the primary circuit then you mustn't use it in your calculations or conceptual analysis.  ...or use a secretive lab assistant that will set random amplitude, frequency and phase of the signal generator which supplies the primary winding with electric energy  .
However, you can probe and use the knowledge about electric signals occurring in the secondary circuit.

Why would you deny yourself knowledge of the signal you feed into primary.
Is that some religious significance to you or.
No comment on emoji.

[verpies]

Why would you deny yourself knowledge of the signal you feed into primary.

Because that knowledge cannot matter in this experiment.


I remind you that we are trying to determine whether the induced voltage leads the induced current in one inductor which is subjected to a varying external magnetic flux.
How this flux variation is generated is immaterial for this determination.

The varying flux can be generated by a moving magnet or by another inductor or magnetoacoustic effect or Villari effect or precessing nuclei.
How the varying flux is generated does not matter because if it did, then you would be dealing with a different question.

[nix85]

That's different from not knowing what you feed it but ok.

[partzman]

This is a test that I will let the reader judge. 

Basically, there are three air coils with identical turns and DCRs that are placed in line horizontally as shown on a flat surface.  In this layout, the left coil is the current sensing coil, the right side coil is the voltage sensing coil and the center coil is driven with a 10kHz sine wave from a power amplifier. 

The start of each winding is positioned at the top so polarities may be observed from the connections.  IOW, the electromagnetic source coil in the center has the finish as the common or ground, the current coil is shown with conventional flow from finish to start and the voltage winding has the ground on the start.  These are opposite from the dot connections expected if the coils were stacked on top of each other so please consider this.

The resultant scope pix has CH1(yel) as the input voltage source to the center coil, CH3(pnk) as the output voltage of the voltage sensing coil. and CH4(grn) is the current flow in the current sensing coil.

Regards,
Pm

[citfta]

Good morning PM.


Nice clear test.  I do have one question.  What is your load?  If the left coil is the current sensing coil then what is the load it is connected to?


Thanks,
Carroll