basic

Photoelectric Effect Stopping Potential Calculator

eV_stop = max(0, hc/λ − φ).

Calculates the stopping potential and maximum kinetic energy of photoelectrons from incident light wavelength and metal work function.

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Dr. Helena Ortiz By Dr. Helena Ortiz
Published Last reviewed 1 min read

Inputs

Results

Enter values and click Calculate to see results.
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How to use this calculator

  1. Fill in the inputs above using the units you already have.
  2. Values update automatically as you type — no submit button needed.
  3. Hover any result row for the underlying formula and intermediate values.

Formula

K_max = hc/λ − φ; V_stop = K_max / e

In depth

Calculates the stopping potential and maximum kinetic energy of photoelectrons from incident light wavelength and metal work function.