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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

`2M`

B

`sqrt(2)M`

C

`0.5M`

D

M

Text Solution

Verified by Experts

The correct Answer is:
B

`implies M_(net)=sqrt(M^(2)+M^(2))=sqrt(2)M`
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Knowledge Check

  • Two magnet each of magnetic moment '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

  • Two magnets of magnetic moments 4Am^(2) and 3Am^(2) are joined to form a cross sing(+), then the magnetic moment of the combination is

    A
    `4Am^(2)`
    B
    `1Am^(2)`
    C
    `7Am^(2)`
    D
    `5Am^(2)`

  • Two bar magnet with magnetic moment 2M and M are fastened togather at right angles to each other at their centres to from a cross system, which can rotate freely about a vertical axis through the centre. The crossed system sets in earth's magnetic field with magnet having magnetic moment 2M making and angle theta with the magnetic merdian such that

    A
    `theta=tan^(-1)(1/sqrt(3))`
    B
    `theta=tan^(-1)(sqrt(3))`
    C
    `theta=tan^(-1)(1/2)`
    D
    `theta=tan^(-1)(3/4)`

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