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Moving Charges and Magnetism question

2015 · Q120
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Moving Charges and Magnetism question

2015 · Q120

NEETPhysicsMoving Charges and MagnetismMCQ+4 / −1
An electron moving in a circular orbit of radius r makes n rotations per second. The magnetic field produced at the centre has magnitude
  1. A
    μ0n2er{{{\mu _0}{n^2}e} \over r}rμ0​n2e​
  2. B
    μ0ne2r{{{\mu _0}ne} \over {2r}}2rμ0​ne​
  3. C
    μ0ne2πr{{{\mu _0}ne} \over {2\pi r}}2πrμ0​ne​
  4. D
    Zero
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