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
![electromagnetism - Determining magnetic flux density of a closely wound toroidal coil - Electrical Engineering Stack Exchange electromagnetism - Determining magnetic flux density of a closely wound toroidal coil - Electrical Engineering Stack Exchange](https://i.stack.imgur.com/rq0qE.png)
electromagnetism - Determining magnetic flux density of a closely wound toroidal coil - Electrical Engineering Stack Exchange
How to calculate the magnetic field in the middle of two of two long straight wires each carrying a current of 5A in opposite directions and are separated by a distance of
![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.
![Approximate formula for magnetic flux density representation B(H; T )... | Download Scientific Diagram Approximate formula for magnetic flux density representation B(H; T )... | Download Scientific Diagram](https://www.researchgate.net/profile/Goeran-Engdahl/publication/3110721/figure/fig2/AS:463278414536705@1487465589054/Approximate-formula-for-magnetic-flux-density-representation-BH-T-compared-with-the.png)
Approximate formula for magnetic flux density representation B(H; T )... | Download Scientific Diagram
![13. A closely wound flat circular coil of 25 turns of wire has diameter of 10 cm and carries a current of 4 ampere. Determine the magnetic flux density at the centre 13. A closely wound flat circular coil of 25 turns of wire has diameter of 10 cm and carries a current of 4 ampere. Determine the magnetic flux density at the centre](https://instasolv1.s3.ap-south-1.amazonaws.com/QuestionBank/5da30e90738bf611fc653fef/solution_5da30fc5738bf611fc6543d3.png)