MCQOPTIONS
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MCQOPTIONS
| 1. |
An electron moving in a circular orbit of radius r makes n rotation per second. The magnetic field produced at the centre has a magnitude of [KCET 2001; UPSEAT 2001, 02] |
| A. | \[\frac{{{\mu }_{0}}ne}{2r}\] |
| B. | \[\frac{{{\mu }_{0}}{{n}^{2}}e}{2r}\] |
| C. | \[\frac{{{\mu }_{0}}ne}{2\pi r}\] |
| D. | Zero |
| Answer» B. \[\frac{{{\mu }_{0}}{{n}^{2}}e}{2r}\] | |