Question

Define electric current and state its SI unit ​

Answer 1

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Electric current is defined as the rate of flow of electric charge. Or, electric current is the amount of charge flowing through a particular area in unit time and is given by: I = Q / t.

The S.I unit of electric current is Ampere (A).

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Answer 2

An electric current is the rate of flow of electric charge past a point or region.An electric current is said to exist when there is a net flow of electric charge through a region. In electric circuits this charge is often carried by electrons moving through a wire. It can also be carried by ions in an electrolyte, or by both ions and electrons such as in an ionized gas (plasma).

Electric current

A simple electric circuit, where current is represented by the letter i. The relationship between the voltage (V), resistance (R), and current (I) is V=IR; this is known as Ohm's law.

Common symbols = I

SI unit = ampere

Derivations from

other quantities =

$i = \frac{v}{r} \\ i = \frac{q}{t}$

Dimension = I