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## Homework Statement

HI, I have this photoelectric effect problem, it is not so difficult but when i got to the units and red about it , i got confused.

The Problem : Photo-electrons are completely hold up by electric potential with potential of 3V. The work function is given. I have to calculate the incident light frequency.

## Homework Equations

## The Attempt at a Solution

So the equation is

E

_{max}=hf

_{inc}-φ

And the units are

[V]=[J]-[J]

This does not work. So I thought let's convert them to eV which is possible for [J].

But when I start to think about the V -> eV its gets confusing because V are not measurement of energy but eV are.

So what do you think guys, can I just do the conversion from [v] to [ev] by multiplying V by e or it is wrong?