Question

The magnetic moment of a diamagnetic atom is

Answer 1

Properties of Magnetic field lines:

(i)They do not intersect each other.

(ii) It is taken by convention that magnetic field lines emerge from North pole and merge at the South pole. Inside the magnet, their direction is from South pole to North pole. Therefore magnetic field lines are closed curves.

Magnetic field lines due to a current through a straight conductor (wire)- consist of series of concentric circles whose direction is given by the Right hand thumb rule.