voltage of an open switch in an imcomplete device

[John Woodgate]

I read in sci.electronics.design that Mark Fergerson <[email protected]>

Hmm. Well, nobody else suggested she take it elsewhere, so I'll plead nolo
contendre.

My disclaimer notwithstanding, did I screw anything else up so badly as to
mislead Erica? You can't possibly mean to class me with "high-grade adepts" like
Rich Grise. ;>)

I'm not going to make odorous comparisons. People here have different
specialities, and the explaining of very fundamental concepts to a
persistent Socratic questioner is no mean task.

 

[Mark Fergerson]

I read in sci.electronics.design that Mark Fergerson <[email protected]>
wrote (in <Q1Zec.2009$432.28@fed1read01>) about 'voltage of an open
switch in an imcomplete device', on Tue, 13 Apr 2004:




I'm not going to make odorous comparisons. People here have different
specialities, and the explaining of very fundamental concepts to a
persistent Socratic questioner is no mean task.

Yeah. Erica seems to have wandered off, so I don't know
if I did any good.

If she asks why electrons have negative charge, I'm going
to give up.

Mark L. Fergerson

 

[Philip A. Marshall]

For a very brief period of time, when the wires were connected to the
battery, work was done, current flowed, and the capacitance of them was
charged up to equi-potentoal of the terminals.
No contradiction.
Theoretically, one could ise some sort of radio receiver and detect
the radiation of the EMF generated by that very brief current flow.

Well, considering that that sort of current flow is on a femtosecond
scale (until KCL starts to apply and current can't flow unless it goes
somewhere), you'd need some pretty accurate instruments to measure it.

But yes, it can be measured.