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phys: add electron weight

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eggy 2021-01-24 17:15:21 -05:00
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@ -899,7 +899,7 @@ V=\frac{E_E}{q} \\
\Delta V = \frac{W}{q} = \frac{\Delta E_E}{q}
$$
The **electron-volt** ($\text{eV}$) is energy required to move an electron through a potential difference of one volt ($1\text{ eV}=1.60×10^{-19}\text{ J}$).
The **electron-volt** ($\text{eV}$) is energy required to move an electron through a potential difference of one volt ($1\text{ eV}=1.60×10^{-19}\text{ J}$). One electron has a mass of $9.031×10^{-31}\text{ kg}$.
When $\Delta V=0$ the points are equipotential to each other, and no work is done moving between them. The images below outline equipotential lines — note that they are always **perpendicular** to electric field lines.