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JIPMER2014PhysicsElectrostatics

A charged particle is accelerated by a potential of 200 V . If its velocity is 8.4 10^8 ~m / s , then value of e / m for that particle is

Options

  1. A17.6 10¹⁶
  2. B14.5 10¹²
  3. C1.76 10¹⁵
  4. D1.45 10¹⁵

Correct answer

C. 1.76 10¹⁵

Step-by-step solution

If electron is accelerated by voltage V , then its kinetic energy = 1 2 m v^2=q V aligned q m & = v^2 2 V & = (8.4 10^8 )^2 2 200 =1.76 10¹⁵ aligned

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