Electron acceleration and kinetic energy

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SUMMARY

An electron accelerated through a potential difference of 10 kV in a TV picture tube achieves a kinetic energy of 10,000 electron volts (eV). The conversion from Joules to electron volts is confirmed, with 1 eV equating to 1.6 x 10^-19 J. The calculated kinetic energy of 1.6 x 10^-15 J translates directly to 10 keV, affirming the accuracy of the conversion process.

PREREQUISITES
  • Understanding of basic physics concepts related to electric potential and kinetic energy.
  • Familiarity with the relationship between Joules and electron volts (eV).
  • Knowledge of the formula for kinetic energy in the context of charged particles.
  • Basic mathematical skills for unit conversion.
NEXT STEPS
  • Study the principles of electric potential energy and its conversion to kinetic energy.
  • Learn about the behavior of electrons in electric fields, particularly in cathode ray tubes.
  • Explore the concept of electron volts and their significance in particle physics.
  • Investigate the applications of accelerated electrons in technology, such as in television and medical imaging.
USEFUL FOR

Students studying physics, educators teaching electromagnetism, and professionals working with electron acceleration in various technologies.

wakejosh
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Homework Statement



an electron in a TV picture tube is accelerated through a potential difference of 10 Kv before it hits the screen. What is the kinetic energy of the electron in electron volts when it hits the screen?



ok, so i know how to work this for Joules and i get: 1.6 x 10 ^-15 J. Now i am not so sure about converting this to eV, I looked up a conversion on the internet and found: 1 eV= 1.6 x 10^-19 J so is it correct to say that the answer is:

1.0 x 10 ^4 eV

any help is appreciated.
 
Physics news on Phys.org
Yep. You can also write it as 10 KeV.
 

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