\Delta(BA) is the change in magnetic flux.The voltage (EMF) generated in a coil of wire can be described by the following equation: EMF=-N\frac Faraday found many ways for this to happen such as changing the magnetic field strength, moving a magnet through a coil of wire, and moving the coil through a magnetic field, just to name a few.
The equation that mathematically describes electromagnetic induction is Faraday's Law, which states that any change in the magnetic environment of a coiled wire will cause a voltage (EMF) to be induced. It was discovered in 1831 by Michael Faraday, and lays the foundation for electrical generation in power plants, electric motors, and AC circuitry which powers the electrical grid, transformers, and many more phenomena. Įlectromagnetic induction is the production of an electromotive force (EMF) being created as a result of relative motion between a magnetic field and a conductor. One of Michael Faraday's first devices for demonstrating induction. While Faraday's law gives us the magnitude of the emf induced by the current, the direction is found using Lenz's law, which transforms the equation above into \(\mathcal\).Figure 1. We will learn about Faraday's law using equations in the next part. The above example explained how magnetic field lines passing through the coil related to the induced electric current in the coil.
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