QQuestionPhysics
QuestionPhysics
Which of the following applies to the electron?
A. charge = - 1, mass = 1 u
B. charge = 0, mass = 0 u
C. charge = 1
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Answer
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Step 1: Identify the charge and mass of an electron.
The charge of an electron is $-1.60217662 \times 10^{-19}$ Coulombs (C) and its mass is $9.10938356 \times 10^{-31}$ kilograms (kg), which is equivalent to $9.10938356 \times 10^{-31}$ kilograms \times 1 u/kg (where u is the atomic mass unit), so the mass of an electron is $9.10938356 \times 10^{-31}$ u.
Step 2: Compare the given options with the identified charge and mass of an electron.
Option A: charge = - 1, mass = 1 u Option B: charge = 0, mass = 0 u Option C: charge = 1
Final Answer
The option that applies to the electron is A. charge = - 1, mass = 1 u.
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