All Questions
4
questions
0
votes
1
answer
178
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Pressing force of a solenoid
If a current is passed through bundle of loosely coiled, insulated wire the space between the wires rapidly contracts, crushing it down into a disk. How can this crushing force be calculated?
I know ...
- 57
0
votes
1
answer
47
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Is the magnetic field outside a solenoid almost null for AC current?
Despite an answer to this thread, I'm not so sure the magnetic flux outside an infinite ideal solenoid is null whenever the current is AC. I've seen no real proof of that, and the Biot-Savart law ...
- 487
-1
votes
1
answer
205
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Apparent contradiction in Ampere law for a solenoid
This picture in Wikipedia is supposed to explain the solenoid formula for the magnetic field $$B l= \mu_0 N I$$
(assuming steady currents).
But this would be true if one consider only the part of the ...
- 487
0
votes
0
answers
133
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Inductance and speed of light
I am studying mutual inductance (or self-inductance), and some clear answer is ignored, not asked or answered in any source i am looking for.
If current is changing then equations of static ...
