**What is meant by the term “electronvolt”?**

eV is the amount of kinetic energy gained by a single electron accelerating over a one-volt electric potential difference in vacuum. 1 eV in joules (symbol J) is equal to the electron’s charge in coulombs (symbol C).

1 eV equals 1.6021766341019 J .

**What is a joule?**

The quantity of energy that may be defined as one joule is the amount of energy that can be exerted when a force of one newton is applied across a distance of 1 meter. One joule is equal to one watt of electricity that is lost as heat or radiated into the environment over the course of one second.

**Formula:**

**J = eV Ã— 1.602176565â‹…10-19**

Where,

J – Joule and

eV – Electron-Volt

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