# Explain the microscopic nature of Electric current?

Explain the microscopic nature of Electric current?i.e What is is average current and Instantaneous current? A microscopic view what really happens?

• What really happens is, of course, electrons moving around. These are clearly not continuous, and can only be treated thus in a macroscopic limit. Is there anything you are specifically interested in? – Danu Feb 25 '14 at 10:29
• – Qmechanic Feb 27 '14 at 23:47

For ordinary matter, there is roughly one electron per two daltons of matter, which is to say, $\frac 12 N_Ae$. This roughly works out at $480*10^6$ coulombs per kilogram. Many of these electrons are bound in the inner orbitals, but there are still plenty of conduction electrons per kilogram, that a 10-ampere current is not going to move in a day.
The bulk of electric current is then carried by random jumps of a very tiny amount of conduction electrons, which slush through the metal, or a similar process of an absence of electrons (holes), bubbling the other way through the metal, under the effect of $E$ along the conductor. The exact nature of the carrier is found by the Hall effect.