question_answer

The direction of the null points is on the equatorial line of a bar magnet, when the north pole of the magnet is pointing [AFMC 1999; Pb. PMT 2000; CPMT 2001; MH CET 2003]

A)            North                                      

B)            South

C)            East                                          

D)            West

Correct Answer: A

Solution :

           N1 and N2 are two null points. And \[{{B}_{H}}=\]Horizontal component of earth?s magnetic field B = Magnetic field due to bar magnet.