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JIPMER2006PhysicsElectrostatics

Two similar charges having mass m and 2 m are placed in an electric field. The ratio of their kinetic energy is :

Options

  1. A4: 1
  2. B1: 1
  3. C2: 1
  4. D1: 2

Correct answer

C. 2: 1

Step-by-step solution

Force on charged particle is electric field F=q E Acceleration a= F m = q E m Velocity aligned v & =u+a t & =0+ q E m t aligned So, kinetic energy aligned & = 1 2 m₁ ( q E m₁ t )^2 1 2 m₂ ( q E m₂ t )^2 & = m₂ m₁ = 2 m m & = 2 1 & =2: 1 aligned

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