A wire of radius 0. 7 cm carries a currentof 100 A that is uniformly distributed over its cross-sectional area. The permeability of free space is.
Find the magnetic field at a distance of 0. 4 cm from the center of the wire.
Find the magnetic field at the surface of the wire (inT) .
Find the magnetic field at a point outside the wire 0. 2 cm from the surface of the wire. (in T)