Electronics > Beginners

Isolation transformer and electrons

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lordvader88:
I'll add some questions

If u have a cloud of free electrons, and in that cloud u put a transformer with AC source on one side, and a closed loop on the other side, what does the electron cloud do ? Or would they just all repel due to Coulumbs law.

Ok what if it was a plasma of hydrogen, so just all free electrons and protons, what would they do ?

In an ideal transformer with a magnetic core, is the magnetic flux literally confined only inside the core ?

boB:

The charges flow in the secondary due to the will of Faraday's law

nForce:
Can someone explain in detail this:


--- Quote ---A transformer is coupled through a magnetic field, so there is no potential between the two sides.  (Capacitors are coupled through an electric field, hence they do have a potential.)
--- End quote ---

What about magnetic potential? So magnetic potential does not move charge around?

IanB:

--- Quote from: nForce on December 07, 2018, 07:00:13 pm ---What about magnetic potential? So magnetic potential does not move charge around?

--- End quote ---

A changing magnetic field will cause charges to move along a conductive path. In a transformer the conductive paths are the wires that make up the windings. There is no conductive path between primary and secondary so the magnetic influence cannot cause charges to move in that direction.

nForce:
Ok, IanB but capacitors are also isolated between plates:


--- Quote ---(Capacitors are coupled through an electric field, hence they do have a potential.)
--- End quote ---

So no current with capacitors?

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