![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.
![Rare earth magnetic flux density permanent magnet in ring shape - China Magnet, Permanent Magnet | Made-in-China.com Rare earth magnetic flux density permanent magnet in ring shape - China Magnet, Permanent Magnet | Made-in-China.com](https://image.made-in-china.com/202f0j00CSTVeKHaOtqQ/Rare-earth-magnetic-flux-density-permanent-magnet-in-ring-shape.jpg)
Rare earth magnetic flux density permanent magnet in ring shape - China Magnet, Permanent Magnet | Made-in-China.com
![Obtain an expression for magnetic flux density B at the center of a circular coil of radius R, having N turns and carrying a current $I$. Obtain an expression for magnetic flux density B at the center of a circular coil of radius R, having N turns and carrying a current $I$.](https://www.vedantu.com/question-sets/d32d0ad8-2d88-4af7-bfee-dc37b1372ab2959594232449431668.png)