A coil having N turns is wound tightly in the form of a

Last updated: 6/10/2023

A coil having N turns is wound tightly in the form of a spiral with inner and outer radii a and b respectively When a current I passes through the coil the magnetic field at the centre is 1 3 H NI b HONI b In 2 b a 2 2 NI d MOIN 4 h In b