Concept Of Electric Current

Commercial power lines make available about 100 amps to a typical home.

Concept of electric current.

Read more concept of electricity what is current. We can compare the electric current to the water flowing through the pipe. 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. It is the flow of charge per unit time.

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. The instantaneous current is given as l q t. When beginning to explore the world of electricity and electronics it is vital to start by understanding the basics of voltage current and resistance. Ohm s law and circuits with resistors.

At first these concepts can be difficult to understand because we cannot see them. 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 one of the most basic concepts that exists within electrical and electronic science electric current is at the core of the science of electricity.

Written by willy mcallister. Google classroom facebook twitter. If q current is flowing through any cross sectional. These are the three basic building blocks required to manipulate and utilize electricity.

Build an intuitive understanding of current and voltage and power. 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. 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. 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.

Following the metaphor of water moving through a pipe this continuous uniform flow of charge through the circuit is called a current. The centimetre gram second units of current is the electrostatic unit of charge esu per second. In this article we shall study the concept of current electricity the resistance ohm s law and the conductance of a conductor. An electric current is the rate of flow of electric charge past a point.

Introduction to circuits and ohm s law. The current so defined above is the average current over the period t. 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. The direction of current is conventionally is in the direction of flow of positive charge.

Science physics current electricity introduction. One ampere equals 3 10 9 esu per second.