Unformatted text preview: ΔE = 1.60e19 J ∴ 1eV = 1.60e19 J This number is on your data sheet of you ever need it. Example 1 : An electron is moved from positive to negative through a potential difference of 1000V. How much energy did it lose in electron volts? 1e (1000V) = 1000 eV Wow, that was done quick! I could’ve done that calculation in my head. This equals 1.60e16J (see if you can confirm this). The electron volt is NOT a metric unit. • It is so common, though, that we still need to recognize and understand it. • Remember to always change your energies into Joules before sticking them into the formulas, otherwise you will get the wrong answer. 10/31/2005 © studyphysics.ca Page 1 of 1...
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 Fall '08
 RABE
 Physics, Energy, Volt, Joule, electron volts, Units of energy, Electronvolt

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