Two identical bar magnets each of length l and pole strength qm are placed perpendicular to each

Two identical bar magnets each of length l and pole strength qm are placed perpendicular to each in such a way that the north pole of one magnet touches the south pole of the other magnet. Find the magnetic moment of the system?

Solution -

Let the pole strength of the system magnets be m and length

But,

But,

Magnetic moment of the system is,

Hence, pole strength is

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