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KVPY2013PhysicsMagnetic Effects of Current

An electron enters a chamber in which a uniform magnetic field is present as shown. Ignore gravity. During its motion inside the chamber

Options

  1. Athe force on the electron remains constant
  2. Bthe kinetic energy of the electron remains constant
  3. Cthe momentum of the electron remains constant
  4. Dthe speed of the electron increases at a uniform rate

Correct answer

B. the kinetic energy of the electron remains constant

Step-by-step solution

work done =0 Hence kinetic energy = constant

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