Latest IIT-JEE Aptitude Question SOLUTION: A cylindrical cavity of diameter a exists inside a cylinder of diameter 2a //Both the cylinder
and the cavity are infinitely long. A uniform current density J flows along the lengt
A cylindrical cavity of diameter a exists inside a cylinder of diameter 2a //Both the cylinder
and the cavity are infinitely long. A uniform current density J flows along the length. If the magnitude of the
magnetic field at the point P is given by N/12 MICRO aJ, then the value of N is