What is the electron flow theory?

Answer 1

Voltage should be more correctly called "potential difference". It is actually the electron moving force in electricity (emf) and the potential difference is responsible for the pushing and pulling of electrons or electric current through a circuit. 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. This potential difference can be produced by connecting a source of electrical potential to the ends of the wire. As I will explain later, there is an excess of electrons at the negative terminal of a battery and a deficiency of electrons at the positive terminal, due to chemical action. Then it can be seen that a potential difference is the result of the difference in the number of electrons between the terminals. The force or pressure due to a potential difference is termed e.m.f. or voltage.

See: electron theory An emf also exists between two objects whenever there is a difference in the number of free electrons per unit volume of the object. If the two objects are both negative, current will flow from the more negatively charged to the less negatively charged when they are connected together. There will also be an electron flow from a less positively charged object to a more positively charged object. The electrostatic field, i.e. the strain of the electrons trying to reach a positive charge or from a more highly negative charge is emf or voltage. It is expressed in units called volts, short for voltage. A volt can be defined as the pressure required to force a current of one ampere through a resistance of one ohm. To make this easier to visualise, consider the water pressure (voltage) required to pass a litre of water (current) through a copper pipe of a certain small diameter (resistance). Also try and visualise water going through other pipes of varying diameters (smaller to larger in size). Either the water pressure required would vary or the volume delivered would vary, or both. You have just grasped the basics of ohms law, where E = voltage; I = current in amperes and R = reistance in ohms: Some examples: Chemical (batteries) e.g. dry cell 1.5V, wet cell storage about 2.1V Electromagnetic (generators) Thermal (heating junctions of dis-similar metals) Piezoelectric (mechanical vibration of certain crystals) Photoelectric (light sensitive cells)

Answer 2

Electricity is the movement of electrons through a conductor. Electrons are attracted to protons. Since we have excess electrons on the other end of the conductor, we have many electrons being attracted to the protons. This attraction sort of pushes the electrons toward the protons. This push is normally called electrical pressure. The amount of electrical pressure is determined by the number of electrons that are attracted to protons.

Answer 3

There are many theories about electrons, but perhaps the most fascinating is quantum theory. It offers a unique explanation of the universe. It is so complex, even Einstein never quite got a handle on it.

Electrons, as far as we can tell, never exist in a measurable precise location, the more accurately you measure its location, the less you can measure its velocity, we have to bounce light off a particle to see it, these photons move the electron in question, ruining the measurement. That's uncertainty. If you look at something small, you change its position or velocity in doing so. We must use probability to make measurements of electron motion.

Electrons also have the unique property, best summed up by Richard Feyman "electrons behave like particles...no they don't exactly, they also behave like waves...no they don't exactly."

Not much of an answer I know, but that's why it's a theory.

Answer 4

electron flow theory in a electric circuit is which transfer the electron in a circuit by through a conductor. The electron fow -ve to +ve terminal.

Answer 5

The electron theory basically states that the movement of electrons in a conductor results in electricity. The point of this theory is an explanation of the behavior of electricity.

Answer 6

A positively charged proton, and the neutron which has no charge!