Electric current is a flow of electric charge through a conductive medium.
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.
The SI unit for measuring the rate of flow of electric charge is the ampere, which is charge flowing through some surface at the rate of one coulomb per second. Electric current is measured using an ammeter.
Read more about Electric Current: Symbol, Conduction Mechanisms in Various Media, Current Density and Ohm's Law, Drift Speed, Electromagnetism, Conventions, AC and DC, Occurrences, Current Measurement
Other articles related to "current, electric current, electric":
... current density is the electric current per unit area of cross section ... It is defined as a vector whose magnitude is the electric current per cross-sectional area ... In SI units, the electric current density is measured in amperes per square metre ...
... in metals is caused by electrons, both electrons and holes contribute to current in semiconductors ... Alternatively, ions support electric current in ionic conductors ... An electric current flowing in a loop of superconducting wire can persist indefinitely with no power source ...
... Current can be measured using an ammeter ... there are various techniques that can be used to measure current Shunt resistors Hall effect current sensor transducers Transformers (however DC cannot be measured) Magnetoresistive field sensors ...
... conductors are attached to a person's body and a small electric current is sent through the body. 73%) and electrolytes, while fat is anhydrous and a poor conductor of electric current ... Each (bare) foot may be placed on an electrode, with the current sent up one leg, across the abdomen and down the other leg ...
... that Great Magnet the Earth"), Europe's then current standard on electricity and magnetism. 1675 Robert Boyle states that electric attraction and repulsion can act across a vacuum ... the Italian condensatore), with which the transient electrical energy generated by current friction machines could now be stored ...
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