Stopping potential and maximum kinetic energy (K_max = e V₀)
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K_max = e V₀
What each symbol means
| Symbol | What it stands for |
|---|---|
| e | Elementary charge (C) |
| V₀ | Stopping potential — minimum retarding potential that stops fastest electrons (V) |
| K_max | Maximum kinetic energy of photoelectrons (J) |
When to use this
Non-relativistic energies; fastest electrons are stopped when eV₀ = K_max. Same K_max as in Einstein equation.