A current of 1 ampere is passed through a straight wire of length 2.0m the magnetic field at a point in the air at a distance of 3m from either end of the wire and lying on the axis of wire will be
A current of 1 ampere is passed through a straight wire of length 2.0m the magnetic field at a point in the air at a distance of 3m from either end of the wire and lying on the axis of wire will be