Problem

A current of 50 A is passed through a straight wire of length 6 cm, then the magnetic induction at a point 5 cm from either end of the wire is (

1\,\text{gauss}=10^{-4}\,\text{T}

). (a) 2.5 gauss (b) 1.25 gauss (c) 1.5 gauss (d) 3.0 gauss