Concept Of Electric Current

As long as the battery continues to produce voltage and the continuity of the electrical path isn t broken charge carriers will continue to flow in the circuit.

Concept of electric current.

Electric current through conductor. Understanding the concept of electric current. 614 an electric current is said to exist when there is a net flow of electric charge through a region. Electric current is defined as the rate of flow of net charge through the conductor with respect to time.

At first these concepts can be difficult to understand because we cannot see them. Whether it is an electrical heater a large electrical grid system a mobile phone computer remote sensor node or whatever the concept of electrical current is central to its. The direction of current is conventionally is in the direction of flow of positive charge. In this article we shall study the concept of current electricity the resistance ohm s law and the conductance of a conductor.

If q current is flowing through any cross sectional. Read more concept of electricity what is current. 832 electric charge is carried by charged particles so an electric current is a flow of charged particles the moving particles are called charge carriers which may be one of several types of. These are the three basic building blocks required to manipulate and utilize electricity.

The current so defined above is the average current over the period t. We can compare the electric current to the water flowing through the pipe. The instantaneous current is given as l q t. It is the flow of charge per unit time.

Google classroom facebook twitter. Following the metaphor of water moving through a pipe this continuous uniform flow of charge through the circuit is called a current. A 60 watt lightbulb pulls. Commercial power lines make available about 100 amps to a typical home.

To gain a deeper understanding of what an electric current is and how it behaves in a conductor we can use the water pipe analogy of electricity certainly there are some limitations but they serve as a very basic illustration of current and current flow. Electric current is one of the most basic concepts that exists within electrical and electronic science electric current is at the core of the science of electricity. One ampere equals 3 10 9 esu per second. The centimetre gram second units of current is the electrostatic unit of charge esu per second.

Direction of electric current as defined above will be taken along the direction of flow of positive charge although in majority of conductors the charge carrier is electron. Ohm s law and circuits with resistors. A common unit of electric current is the ampere which is defined as a flow of one coulomb of charge per second or 6 2 10 18 electrons per second. Science physics current electricity introduction.

Written by willy mcallister. Build an intuitive understanding of current and voltage and power.