Mathematics · Aptitude
An electron revolves in a circular path around an infinite cylindrical wire having a uniform linear charge density of 2 × 10-8 C m-1 under the influence of an attractive electrostatic field. If the mass of the electron is 9 × 10-31 kg, the velocity with which it revolves is x × 106 m s-1. The value of x is:
- 116
- 22
- 34
- 48✓
Correct answer
8
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