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Are there any equations in identifying the magnetic flux density of a ferromagnetic magnet at a certain distance (for example, a neodymium magnet has a magnetic flux density of 5.31 miliTesla at
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![inductor - how do we get these three formulas from the definition? field strength - Electrical Engineering Stack Exchange inductor - how do we get these three formulas from the definition? field strength - Electrical Engineering Stack Exchange](https://i.stack.imgur.com/tbhmv.png)
inductor - how do we get these three formulas from the definition? field strength - Electrical Engineering Stack Exchange
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