Pages

Friday, 26 September 2014

ELETRIC CURRENT

An electric current is a flow of electric charge. In electric circuits this charge is often carried by moving electrons in a wire. It can also be carried by ions in an electrolyte, or by both ions and electrons such as in a plasma.[1]
The SI unit for measuring an electric current is the ampere, which is the flow of electric charge across a surface at the rate of one coulomb per second. Electric current is measured using a device called an ammeter.[2]
Electric currents can have many effects, notably heating, but they also create magnetic fields, which a.

No comments:

Post a Comment