Q. 17

Three identical bar magnets are riveted together at center in the same plane as shown in Fig. 5.1. This system is placed at rest in a slowly varying magnetic field. It is found that the system of magnets does not show any motion. The north-south poles of one magnet is shown in the Fig. 5.1. Determine the poles of the remaining two.

Answer :

For the system to be in equilibrium the net magnetic moment must be zero at the center.


As one of the magnetic moment points in +ve y-axis therefore the other should point at an angle of from it.




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