[theunchosen]

When you create current in any form of wiring you create EMF.

Its called self-induction. You create current in a wire with a magnet. The instant after you do that the wire creates an opposing EMF in the opposite direction, equal to a substantial fraction of the force you originally issued to the magnet.

To discover how this works out we use a quick check with a "right hand rule." If you point your thumb in the direction of positive current and your palm on the coil your fingers will curve in the direction of the EMF provided from the coil(if you run power through it).

If you run a magnet through the coil it will generate a current. . .and the flow will force a self-induced EMF in the opposite direction of the travel of the magnet.

The resistance I'm speaking of is how alot of dials work, specifically the ones in analog volt, amp meters.

The amount of EMF self-inducted resistance is proportional to 2 things. The power created from the original EMF flow and the material of the wiring. A theoretical perfect wire would perfectly oppose the EMF and it wouldn't move. But we do not know of any such perfect element, nor do we have any perfect wires of elements we do have. If you doubt the dampening effect I can give you a quick lab to demonstrate it.

Get a conductive metal sheet and hang it on a rope. swing it like a pendulum.

Repeat but place two large magnets on either side(not close enough to tough and viced down). If it swung 10 times before slowing substantially it will make it through. . .maybe 3-4 passes before essentially stopping.

The stop time is even greater if you use a copper wire on the end and run a diode or a couple of diodes at the pivot for the rope. To prove that it has nothing to do with the magnets attracting the metal take the metal and drill holes in the metal to make it look like swiss cheese. repeat. The swiss cheesed metal will swing as long as the metal with no magnets. The reason is its not generating true electric current(since its not a coil and you aren't using the electricity) its generating an eddy current. The current is flowing in the metal and making it warm and resisting motion and thats it. The holes kill the eddy currents of the EMF generated electron front. A rope with a winding of copper coils in the same experiment(much harder because you have to make sure the magnet doesn't actually touch the coil and it needs to go through the middle) will do the same thing.

If you want something else. . .Go try and turn your alternator with the battery disconnected and the lights on. Turn the lights off and try it.

Also if self-induced EMF didn't exist, every generator on the planet would violate the 1st law of thermodynamics as well as most statements of the 2nd. The joints in high power applications like power plant turbines are extremely low friction because it costs them alot to run and they want to squeeze every penny they can. If you disconnected those turbines and cut the flow off they would spin for at least an hour down from 3600 rpm. While connected to the grid it takes just minutes depending how big the generator is.