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| 184_notes:relating_e [2021/04/08 19:23] – dmcpadden | 184_notes:relating_e [2021/06/29 17:03] (current) – bartonmo |
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| We also have a new right hand rule that let's us figure out what will be the direction of the induced current (or the direction of the curly electric field) in the wire. | We also have a new right hand rule that let's us figure out what will be the direction of the induced current (or the direction of the curly electric field) in the wire. |
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| Faraday's law is conceptually extremely important because it tells us how electric and magnetic fields are related (finally!). From a more practical stand point, Faraday's law provides a means of creating an electric current when there previously was not any - as long as you can provide the energy to change the flux. This is actually how electric generators work to create the electricity that comes out of the wall outlets. There is generally some sort of coil placed in a large magnetic field. The coil is then moved by some mechanical means (i.e., by wind in a turbine or by steam from burning coal or nuclear material in power plant). When the coil rotates in the magnetic field, the flux through the coil changes and creates a current that can then be used. | Faraday's law is conceptually extremely important because **it tells us how electric and magnetic fields are related** (finally!). From a more practical stand point, Faraday's law provides a means of creating an electric current when there previously was not any - as long as you can provide the energy to change the flux. This is actually how electric generators work to create the electricity that comes out of the wall outlets. There is generally some sort of coil placed in a large magnetic field. The coil is then moved by some mechanical means (i.e., by wind in a turbine or by steam from burning coal or nuclear material in power plant). When the coil rotates in the magnetic field, the flux through the coil changes and creates a current that can then be used. |