- published: 20 Oct 2016
- views: 4327
An electric current is a flow of electric charge. In electric circuits this charge is often carried by moving electrons in a wire. It can also be carried by ions in an electrolyte, or by both ions and electrons such as in a plasma.
The SI unit for measuring an electric current is the ampere, which is the flow of electric charge across a surface at the rate of one coulomb per second. 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, inductors and generators.
The particles that carry the charge in an electric current are called charge carriers. In metals, one or more electrons from each atom are loosely bound to the atom, and can move freely about within the metal. These conduction electrons are the charge carriers in metal conductors.
The conventional symbol for current is I, which originates from the French phrase intensité de courant, meaning current intensity. Current intensity is often referred to simply as current. The I symbol was used by André-Marie Ampère, after whom the unit of electric current is named, in formulating the eponymous Ampère's force law, which he discovered in 1820. The notation travelled from France to Great Britain, where it became standard, although at least one journal did not change from using C to I until 1896.
So, electric current works like a river... kinda... Instead of flowing based on elevation, electric current works a little differently. But it's a good metaphor. In this episode of Crash Course Physics, Shini talks to us about electric current, voltaic cells, and how we get electric charge. Get your own Crash Course Physics mug from DFTBA: http://store.dftba.com/products/crash... The Latest from PBS Digital Studios: https://www.youtube.com/playlist?list... -- Produced in collaboration with PBS Digital Studios: http://youtube.com/pbsdigitalstudios -- Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashC... Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support CrashCourse on Patreon: http://ww...
When electric charges move, that's called current! In most circuits, this movement is accomplished by electrons in a conductor. As it turns out, an electron doesn't need to move very far; it can force other electrons in the conductor to move. In the video, we demonstrate moving electric charges with a tube and some metal balls. We also examine conventional current vs. electron flow and how good ol' Ben Franklin can be blamed for that bit of confusion. Previous episode: https://www.youtube.com/watch?v=z8qfhFXjsrw Written Tutorial: https://learn.sparkfun.com/tutorials/what-is-a-circuit
This video of basic theory of electric current is uploaded by http://www.electrical4u.com
http://hilaroad.com/video/ This video explains electricity as the flow of atomic particles called electrons. Animations demonstrate electron flow. Batteries are described as chemical devices designed to create electron flow. Terms covered in video include Volts, current and Amperes.
Physics, Class XII Chapter : Current Electricity Topic : Electric Current. Classroom lecture by Pradeep Kshetrapal. Language : English mixed with Hindi.
Introduction to electric circuits and electricity. Includes Kirchhoff's Voltage Law and Kirchhoff's Current Law.
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Mr. Andersen describes the relationship between voltage, current and resistance in an electric circuit. Ohm's Law is introduced through a circuit simulation. Intro Music Atribution Title: I4dsong_loop_main.wav Artist: CosmicD Link to sound: http://www.freesound.org/people/CosmicD/sounds/72556/ Creative Commons Atribution License
This interactive animation describes about the electric current, flow of electric current, current and charge movement. It also describes about the conductor, insulator and the SI unit of the electric current.
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How does electric current pass through wire?
Find the magnetic force on a curved current carrying wire.
How can i Save Electric Current i hope u like it
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Physics, Class XII Chapter: CURRENT Electricity Topic : Introduction Classroom lecture by Pradeep Kshetrapal. Language : English mixed with Hindi.
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Dr Mike Young goes into detail about electrical current, resistivity, resistance and electrical power.
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Resulting in defection through vacuum
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Worlds onto planets, existence built on faith
We are the generation of the earth, mastered at any rate
We are the people of the stars, mansions of the moon
Come take us home where we belong
Take us home once and for all