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
![Calculate magnetic flux density of the magnetic field at the centre of a circular coil of 50 tunrs, having radius of 0.5 m and carrying a current of 5 A. Calculate magnetic flux density of the magnetic field at the centre of a circular coil of 50 tunrs, having radius of 0.5 m and carrying a current of 5 A.](https://i.ytimg.com/vi/9OnWFZe53c4/maxresdefault.jpg)
Calculate magnetic flux density of the magnetic field at the centre of a circular coil of 50 tunrs, having radius of 0.5 m and carrying a current of 5 A.
![Applied Sciences | Free Full-Text | Quick Calculation of Magnetic Flux Density in Electrical Facilities Applied Sciences | Free Full-Text | Quick Calculation of Magnetic Flux Density in Electrical Facilities](https://pub.mdpi-res.com/applsci/applsci-10-00891/article_deploy/html/images/applsci-10-00891-g008.png?1582189292)