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Two magnets, each of magnetic miment 'M'...

Two magnets, each of magnetic miment 'M' are placed so as to form a cross at right angles to each other. The magnetic moment of the system will be

A

2 M

B

`sqrt(2) M`

C

`M/2`

D

M

Text Solution

Verified by Experts

The correct Answer is:
B
According to the parallelogram law,
`M = sqrt(M_(1)^(2) + M_(2)^(2) + 2M_(1) M_(2) cos 90^(@)) (M_(1) = M_(2) = M)`
`M = sqrt(M^(2) + M^(2)) = sqrt(2) M`
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