Magnetic Effects of Current and Magnetism: JEE Main 2021 Physics question
JEE Main 2021 · 31 Aug, Morning shift · Q7684
JEE Main 202131 Aug, Morning shiftPhysicsMediumMagnetic Effects of Current and Magnetism165× since 2002
A coil having N turns is wound tightly in the form of a spiral with inner and outer radii 'a' and 'b' respectively. Find the magnetic field at centre, when a current I passes through coil:
