MH's ideal coil and voltage question

[minnie]

  tinman, did you study Lewin, Kirchoff for the birds, striped shirt about
  16 mins YouTube?
          John.

[tinman]

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Brad

[tinman]

Is this loop current steady, or is it continuously-varying with time?

To be more accurate,lets say the current is increasing at 800mA a second.

Brad

[tinman]

  tinman, did you study Lewin, Kirchoff for the birds, striped shirt about
  16 mins YouTube?
          John.

I guess you missed the whole thread dedicated to this very subject that Poynt started.

The total sum of the voltage around that loop = 0,and Kirchoffs law hold's.

So now you have to decide whether you believe Lewin or Poynt?

If lewin is correct,and Kirchoffs law dose not hold,then im screwed.
If Poynt is correct,then my statement also remains correct,in that there is no potential difference that can be measured at any two points across that looped ideal coil. Also remember there is no resistance value in the wire,and so the two resistors in Lewins experiment are omitted.

Below is a circuit showing a real world inductor.
Using this circuit,turn it into an ideal inductor that is looped(shorted)
Lets see if you can do that John.


Brad

[verpies]

When you think about that hard you realize that one Henry is one Volt-Second per Amp.

That is true, too.  This is a very useful relation for building electronic circuits.  But note, that it involves 4 variables.

For this reason, I do not consider the above relation to be most basic, like the relation of one Henry being one Weber per Amp.
Note that it involves 3 variables. It is also less useful for building electronic circuits - albeit not so for building motors.

Also, notice that it is impossible to have Amps without Webers but it is possible to have Volts without Amps.
This lack of difference makes the 3 variable relation more basic and coherent than the 4 variable relation.