CBSE Class 12-science Answered
An electron is moving on a circular orbit of radius r with speed v.It produces a magnetic feild B at its centre,then radius of circle is proprortional to;
Options:
1.v/B
2.v/Bsquare
3.[v/B]square
4.[v/B]raised to power half
Asked by Kb Aulakh | 20 Apr, 2015, 04:53: PM
Expert Answer
As the electron is moving perpendicular to the direction of magnetic field, it experiences a maximum force which acts perpendicular to the direction of magnetic field as well as .
This force will provide the required centripetal force for the electron to describe a circular path in the magnetic field of radius r:
Hence we can write that:
Therefore the correct option is 1. v / B
i.e Radius of the circle is proprortional to v / B
Answered by Jyothi Nair | 21 Apr, 2015, 09:04: AM
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