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| What Is Current |
This electronics video tutorial answers the question what is current? It explains the concept of electric current by means of electric charge, time, voltage, and resistance. It explains how to calculate the current in a series circuit containing 3 resistors as well as resistors in a parallel circuit. It covers the concept of Kirchoff's current laws and the current divider circuit.
The moving particles are called charge carriers, and in different conductors may be different types of particle. In electric circuits the charge carriers are often electrons moving through a wire. In an electrolyte the charge carriers are ions, and in an ionized gas (plasma) are ions and electrons.
The SI unit of electric current is the ampere, which is the flow of electric charge across a surface at the rate of one coulomb per second. The ampere (symbol: A) is an SI base unit Electric current is measured using a device called an ammeter.
Electric currents cause Joule heating, which creates light in incandescent light bulbs. They also create magnetic fields, which are used in motors, generators, inductors, and transformers.
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What Is Current?
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. Electric charge is carried by charged particles, so an electric current is a flow of charged particles.The moving particles are called charge carriers, and in different conductors may be different types of particle. In electric circuits the charge carriers are often electrons moving through a wire. In an electrolyte the charge carriers are ions, and in an ionized gas (plasma) are ions and electrons.
The SI unit of electric current is the ampere, which is the flow of electric charge across a surface at the rate of one coulomb per second. The ampere (symbol: A) is an SI base unit Electric current is measured using a device called an ammeter.
Electric currents cause Joule heating, which creates light in incandescent light bulbs. They also create magnetic fields, which are used in motors, generators, inductors, and transformers.
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