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An electron and a proton starting from rest are accelerated through a potential difference of 1000 V. Which one of the following statements in this regard is correct?

An electron and a proton starting from rest are accelerated through a potential difference of 1000 V. Which one of the following statements in this regard is correct? Correct Answer The speed of the electron will behigher than that of the proton.

When accelerated from the rest, the energy is fully kinetic.

So, the Kinetic Energy (KE) = Charge x Potential Difference

= [ height="27" src="file:///C:/Users/KOMAL~1.DES/AppData/Local/Temp/msohtmlclip1/01/clip_image002.png" width="6">MV2 = Q.V

  • From the above equation, it is obvious that the velocity of particle is inversely proportional to the mass of that particle.
  • So, electron will gain more speed as it has lower mass than proton. Also, the energy is fully kinetic in above case; hence, the electron will have greater energy as a result of greater velocity.

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