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Three magnets of same length but moments...

Three magnets of same length but moments `M,2M` and `3M` are arranged in the form of an equilateral triangle with oppositive poles nearer, the resultnat magnetic moment of the arrangement is

A

6 M

B

zero

C

`sqrt3M`

D

`sqrt3/2M`

Text Solution

Verified by Experts

The correct Answer is:
C
`M_(R)=sqrt(M_(1)^(2)+M_(1)^(2)+2M_(1)M_(2)costheta)`
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NARAYNA-MAGNETISM AND MATTER-EXERCISE - 1 (C.W)
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  2. A thin "bar" magnet of length 'l' and magnetic moment 'M' is bent at t...

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  3. Three magnets of same length but moments M,2M and 3M are arranged in t...

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  4. A "bar" magnet of moment M is cut into two identical pieces along the ...

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  5. A magnetic pole of pole strength 9.2Am. Is placed in a field induction...

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  6. The magnetic induction at distance of 0.1m from a strong magnetic pole...

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  7. If area vector bar(A)=3bari+2barj+5bark m^(2) flux density vector bar(...

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  8. P and Q are two unlike magnetic poles. Induction due to 'P' at the loc...

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  9. Two north poles each of pole strength m and a south pole of pole stren...

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  10. The pole strength of a horse shoe magnet is 90Am and distance between ...

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  11. The force acting on each pole of a magnet when placed in a uniform mag...

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  12. An iron specimen has relative permeability of 600 when placed in unifo...

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  13. A magnetic needle of pole strength 'm' is privoted at its centre. Its ...

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  14. Two identical "bar" magnets are jouned to form a cross. If this conbin...

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  15. A "bar" magnet of length 16 cm has a pole strength of 500 milli amp.m....

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  16. A "bar" magnet is at right angles to a uniform magnetic field. The cou...

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  17. A "bar" magnet of moment bar(M)=hat(i)+hat(j) is placed in a magnetic ...

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  18. A "bar" magnet of magnetic moment 1.5J//T is aligned with the directio...

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  19. The work done in turning a magnet of magnetic moment 'M' by an angle o...

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  20. A "bar" magnet of moment 4Am^(2) is placed in a nonuniform magnetic fi...

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