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Sayan Pal posted an Question
July 06, 2021 • 07:03 am 30 points
  • IIT JAM
  • Physics (PH)

8. a uniformly charged spherical metal ball of mass m, radius r and charge q is rotating with an angular velocity w about one of its diameter. then the ratio of

8. A uniformly charged spherical metal ball of mass M, radius R and charge q is rotating with an angular velocity w about one of its diameter. Then the ratio of its magnetic dipole moment to the mechanical moment (angular momentum) is (a) a/2MR, (6) q/2M, (c) q/M, (d) q/Mw

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  • Devisharan Best Answer

    Answer option B

    cropped2620951269413734388.jpg
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    why you have taken the area 'pi×r^2'..the surface area of a sphere should be '4×pi×r^2'

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