11 A spiral of 20 turns with inner radius R and outer radius

Last updated: 6/9/2023

11 A spiral of 20 turns with inner radius R and outer radius 2R is placed as shown in figure If the current is i find magnetic field at the centre of spiral 1 2 10 o In2 R 10 o In 7 RA2R 2 4 10 o In 3 R 10 o In3 4t