An electron and a proton starting from rest get accelerated through potential difference of 100 kV. The final speeds of the electron and the proton are Ve and Vp respectively. Which one of the following relations is correct?
- A.Ve > Vp
- B.Ve < Vp
- C.Ve = Vp
- D.Cannot be determined
Show answer
Both particles gain the same kinetic energy, but the electron is far lighter, so it ends up much faster. When a charge q is accelerated through a potential difference V, it gains kinetic energy equal to qV.
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