A long straight wire carries a current along the 'z' axis. One can find two points in the plane
perpendicular to the conductor such that
i) The magnetic fields are equal
ii) The direction of the magnetic fields are perpendicular
iii) Magnitudes of the magnetic fields are equal
iv) The field at one point is opposite to that at the other point
We can observe around a current carrying conductor
i) the direction of magnetic field are perpendicular to each other and magnitudes may be equal also we can find the field at one point is opposite to that at the other point as shown in figure.
