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What are the Simplifying Assumptions for Calculating Eddy Current Forces?
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[QUOTE="LeafNinja, post: 6519326, member: 644741"] I am not sure what you are looking for when you say magnitude of eddy currents. Eddy currents are currents induced by a magnetic field, and flow in loops, usually in sheet conductors rather than wires. The current in the solenoid can be considered analogous to the flow of water in a pipe: the current is traveling in a desired path, just as water travels along the desired path of the pipe. In contrast, eddy currents can be compared to eddies in water, which are localized vortices in a body of water. The equations that describe eddy currents should be derived from Maxwell's equations, as are all electromagnetic phenomenon. [ATTACH type="full"]286509[/ATTACH] For example, if there was a magnetic field increasing in the direction pointing out of the page towards you, the eddy currents shown in the image would be produced. This is due to Faraday's law, which is the same phenomenon that causes currents in the solenoid. Except, this time, the currents are localized rather than along a certain path and should be thought of as current density ##\vec{J}## $$\int_{closedloop} \vec{E} \bullet dl = -\frac{d\Phi_{B}}{dt}$$ Because ## \vec{E} = \rho\vec{J}## where ##\rho## is the resistivity, the current density can be obtained if the electric field is known. Note that the other Maxwell's Equations such as Ampere's law also play a role because the electrical currents themselves give rise to another magnetic field. [/QUOTE]
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What are the Simplifying Assumptions for Calculating Eddy Current Forces?
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