Electric A Current

In alternating current the motion of the electric charges is periodically reversed.

Electric a current.

Electric current in a wire where the charge carriers are electrons is a measure of the quantity of charge passing any point of the wire per unit of time. Click again to see term 1 29. An electric current is the rate of flow of electric charge past a point or region. The ampere ˈ æ m p ɪər æ m ˈ p ɪər or ˈ æ m p ɛər uk symbol.

The difference in electrical potential between two points measured in volts. The adjective electric is implied by the context of the situation being described. More specifically the electric current is the rate of charge flow past a given point in an electric circuit. It can take the form of a sudden discharge of static electricity such as a lightning bolt or a spark between your finger and a ground light switch.

The international system of units defines the ampere in terms of. If the two requirements of an electric circuit are met then charge will flow through the external circuit. In direct current it is not. The electrical current is measured in ampere amp unit.

Electric current is defined as the rate at which charge flows through a surface the cross section of a wire for example. When two point of different electric potential are connected by a conductor charge flows so long as a potential difference exists. Using the word current in this context is to simply use it to say that something is happening in the wires charge is moving. Using water pipe analogy we can visualize the electrical current as water current that flows in a pipe.

An electric current is said to exist when there is a net flow of electric charge through a region. It is named after andré marie ampère 1775 1836 french mathematician and physicist considered the father of electrodynamics. Electrical current is the flow rate of electric charge in electric field usually in electrical circuit. An electric current is a flow of electric charge in a circuit.

A often shortened to amp is the base unit of electric current in the international system of units si. Despite referring to many different things the word current is often used by itself instead of the longer more formal electric current. It is said that there is a current a flow of charge.