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MHT-CET PCB 04 — MHT - CET STD 12 Science — Question

Maharashtra BoardEnglish MediumSTD 12 ScienceMHT - CETMHT-CET PCB 041 Mark
MCQ
An electron moving in a circular orbit of radius r makes n rotations per second. The magnetic field produced at the centre has magnitude ____________.
  • ✓
    `(mu _0 "ne")/ (2r)`
  • B
    zero
  • C
    `(mu_0 "ne")/(2pir)`
  • D
    `(mu_0 "n"^ 2 "e")/ r`
✓

Answer

Correct option: A.
`(mu _0 "ne")/ (2r)`
A

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