Ohm's Law Explained
Ohm's Law Explained Four essential attributes form the core of electron movement: Power to do work (P) Current Intensity (I) Electromotive force (E) Resistance (R) One way to visualize these attributes is to imagine electrons in copper wire. If one end of the wire has an excess of electrons, the electrons will exert a force, moving toward the end with a lack of electrons. Thus, electricity begins with a certain Electromotive force, a difference in potential that "pushes" electrons in one direction. Electromotive force , however, encounters some difficulty in moving electrons freely in every situation. Some materials resist electron movement more or less than others. This opposition to electromotive force is called Resistance...it actually limits the number of electrons that can be "pushed". The combined effect of resistance upon electromotive force results in a specific number of electrons actually flowing. This flow of current is called Curre...