Practice question
Question
The charge-to-mass ratio of an electron is determined to be 1.758820 × 10¹¹ C kg⁻¹. If the charge on an electron is -1.602176 × 10⁻¹⁹ C, what is the mass of an electron in kilograms?
Explanation
mₑ = e/(e/mₑ) = 9.1094×10⁻³¹ kg.
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