MDCAT Physics MCQ #2544

The rest mass energy of an electron is approximately

MDCAT Physics MCQ #2544

  1. Question 1

    Q1. The rest mass energy of an electron is approximately

    • A) 0.511 MeV
    • B) 1.022 MeV
    • C) 931.5 MeV
    • D) 938 MeV

    Answer: 0.511 MeV

    Explanation: 0.511 MeV is the rest mass energy of an electron (or positron); it's a fundamental constant.