First slide

The bar magnet

Question

Find the resultant magnetic moment for the following arrangement

Moderate

A

$\sqrt{2} M$
B

$(\sqrt{2} + 1) M$
C

$(\sqrt{2} - 1) M$
D

M

Solution

$M^{1} = \sqrt{2} M + M; M^{1} = (\sqrt{2} + 1) M$

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