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Homework Help: Electron Volt energy

  1. Jun 12, 2013 #1
    1. The problem statement, all variables and given/known data

    Hi guys.

    X-ray energies are commonly given i nunits of "electron volts". 1 eV is the energy that an electron would have after being accelerated across a potential different of 1V and is equivalent to 1.601 *10^-19
    In an x-ray machine an electron that is about to hit an electrode has a kinetic energy of 10keV. What is the maximum energy of the x-ray photon that this interaction could produce?

    2. Relevant equations

    3. The attempt at a solution

    I dont even know where to start.
  2. jcsd
  3. Jun 12, 2013 #2


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    2017 Award

    Staff: Mentor

    Just consider energy conservation.

    If I give you 10 apples (and you have no apples to begin with), what is the maximal number of apples you can give me back?
  4. Jun 12, 2013 #3

    Hahhaha thanks man. I can't believe i never realised that.
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