here is a nice little experiment.
Steinmetz said it takes a voltage (drop) to build up a magnetic field, but it takes no energy to maintain it.
first I thought he was wrong. but... I remembered some strange effects. for instance:
https://youtu.be/Gjdt3ImlN3s
so lets do this the other way around.
what if we take a strong (field flux lines concentrated near to the magnet) neodymium bar magnet.
we wind a coil with insulated wire around it (in the magnetic field) and we solder the beginning and ending together. making it a closed loop.
I say if we want to take the magnet out(if it is loosly wound) we would expierence a drag.
second thing is, if we take the magnet out and place it away, the coil will have a magnetic field.
third, of we open up the closed loop magnetic field disappears.
If all of this is true, what does this say about the dielectric field of the coil? If the loop is openend and the magnetic field collapses, there should be a bemf producing a voltage (dielectric field).
pretty simple experiment.
Steinmetz said it takes a voltage (drop) to build up a magnetic field, but it takes no energy to maintain it.
first I thought he was wrong. but... I remembered some strange effects. for instance:
https://youtu.be/Gjdt3ImlN3s
so lets do this the other way around.
what if we take a strong (field flux lines concentrated near to the magnet) neodymium bar magnet.
we wind a coil with insulated wire around it (in the magnetic field) and we solder the beginning and ending together. making it a closed loop.
I say if we want to take the magnet out(if it is loosly wound) we would expierence a drag.
second thing is, if we take the magnet out and place it away, the coil will have a magnetic field.
third, of we open up the closed loop magnetic field disappears.
If all of this is true, what does this say about the dielectric field of the coil? If the loop is openend and the magnetic field collapses, there should be a bemf producing a voltage (dielectric field).
pretty simple experiment.