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AP EAMCET202319 May 2023Morning ShiftPhysicsMagnetic Effects of CurrentActual

The radius of the path of an electron moving at a speed of 3.2 10^7 ~ms ⁻¹ in a magnetic field of 6 10⁻⁴ ~T perpendicular to it is (mass of electron is 9 10⁻³¹ ~kg and charge of electron is .1.6 10⁻¹⁹ C )

Options

  1. A22.4 ~cm
  2. B13 ~cm
  3. C30 ~cm
  4. D39 ~cm

Correct answer

C. 30 ~cm

Step-by-step solution

R = mv qB = 9.1 10⁻³¹ 3.2 10^7 1.6 10⁻¹⁹ 6 10⁻⁴ =30 ~cm

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