MHT CET202020 Oct 2020Morning ShiftPhysicsMagnetic Effects of CurrentActual
An electron at rest is accelerated by a potential ' V ₁ ', in uniform magnetic field experiences a force 'F 1^ . When potential is changed to ^ V ₂^ ', the force experienced by the electron gets doubled. The ratio of V₁ to V₂ is
Options
- A4: 1
- B2: 1
- C1: 2
- D1: 4
Correct answer
D. 1: 4
Step-by-step solution
An electron at rest is accelerated by a potential ' V₁ ', in uniform field experiences a force ' F₁ '. When potential is changed to ' V₂ ', the force experienced by the electron gets doubled. The ratio of V₁ to V₂ is 1: 2 . F ₁= eV ₁ ~d 2 F ₁= eV ₂ ~d V₁ V₂ = 1 2