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Following figures show the arrangement of bar magnets in different configurations. Each magnet has magnetic dipole moment m⃗. Which configuration has highest net magnetic dipole moment?

1. A
2. B
3. C
4. D

Correct answer: A

Solution

The net magnetic dipole moment is the vector sum of the individual dipole moments. The configuration with all dipole moments aligned in the same direction will have the highest net dipole moment. Without specific diagrams, configuration A is assumed to have this alignment.

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