Coil Induction
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Lorentz's strength depends on the speed of the load. However, the same effect can be achieved by displacing the magnetic field. One way to do that is to move a magnet inside a bovine in which the movement of electrons is generated and with it a current. The phenomenon is called electrical induction and is the mechanism as current is generated in a generator.
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Magnetic Field around a Wire
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Magnetic Field around a Spiral
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Magnetic Field of a Coil
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Intensidad del campo magnético de una bobina
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Si se observa el campo que genera una bobina se vera la similitud con el de un imán permanente. El campo depende de la corriente que circula por la bobina, de su largo y su numero de vueltas.
Por ello con el campo magnético se calcula mediante:
$ H_s = \displaystyle\frac{ N I }{ L }$ |
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Densidad de flujo magnético de una bobina
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The magnetic field can calculate the number of turns
$ B = \mu_r \mu_0 \displaystyle\frac{ N I }{ L }$ |
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Effect of a magnetizable Core
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