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10 cards from this deck
Heated metal causes free electrons to gain enough energy to be emitted from surface
Device using thermionic emission to produce electron stream
ΔW=eV\Delta W = eVΔW=eV
1.6×10−191.6 \times 10^{-19}1.6×10−19 C
Potential difference electron is accelerated through
KE of electron accelerated across 1 V potential difference
Electrical potential energy → kinetic energy
12mv2=eV\frac{1}{2}mv^2 = eV21mv2=eV
Heat cathode to induce thermionic emission
Accelerates electrons via positive charge & potential difference
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