First slide

The bar magnet

Question

Following figures show the arrangement of bar magnets in different configurations. Each magnet has magnetic dipole moment $\vec{m}$ . Which configuration has highest net magnetic dipole moment?

Moderate

A
B
C
D

Solution

The direction of magnetic dipole moment is from south to north pole of the magnet. In configuration (1),

In the configuration (2)
In the configuration (3)
In the configuration (4)

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