An electron is accelerated from rest through a p.d. of 50 V. The kinetic energy it gains is:

  1. 8 10^-18 J
  2. 8 10^-17 J
  3. 8 10^-19 J
  4. 1.6 10^-17 J
Answer

A) 8 10^-18 J

KE = eV = 1.6 10^-19 50 = 8 10^-18 J (= 50 eV). SLO P-11-E-04 · Understanding

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