Engineering Board Exam Reviewer · Physics · medium
An electron is accelerated through a potential difference of 1000 V. What kinetic energy does it gain?
- 1.602 × 10-16 J (1000 eV)
- 1.602 × 10-19 J (1 eV)
- 9.109 × 10-28 J (1000 eV)
- 1.602 × 10-13 J (106 eV)
Answer
A. 1.602 × 10-16 J (1000 eV)
Solution
KE = eV = (1.602 × 10-19)(1000) = 1.602 × 10-16 J = 1000 eV = 1 keV.
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