BRAINCAKEThe Electron Volt
On the quantum level the SI unit the joule is huge so a smaller unit of energy is needed. One electron volt is the energy transferred to or from an electronwhen it moves through a potential difference of 1 volt.since W = QV = eV = 1.6 x 10-19.
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Key terms in this lesson
- energy
- The capacity of a system to do work.
- potential difference
- The work done, or energy transferred, per unit charge as charge moves between two points in a circuit.
- photon
- A discrete packet, or quantum, of electromagnetic energy.
More in Quantum Physics
- The Energy of a Photon and the Planck Constant
- The Photoelectric Effect
- The Photoelectric Effect Equation and Wave-Particle Duality
All 4 lessons in Quantum Physics · All OCR AS-level Physics topics