A 4 R 4 R A long straight metal rod has a very long hole of

Last updated: 6/25/2023

A 4 R 4 R A long straight metal rod has a very long hole of radius a drilled parallel to the rod axis as shown in the figure If the rod carries a current i find the value of magnetic induction on the axis of the hole where OC c Hoic A b a Hoic B 2 b a C Hoi b a 2 c D Moic 2 a b