Sources of electromotive force (EMF) or voltage To produce a drift of electrons, or electric current, along a wire it is necessary that there be a difference in "pressure" or potential between the two ends of the wire.
(Sources of electromotive force (EMF) or voltage; To produce; a drift of electrons, or electric current, along a wire)
Sources of electromotive force (EMF) or voltage
To produce
a drift of electrons, or electric current, along a wire