Calculate the speed of (a) a proton and (b) an electron

Step 1 of 2:-

Here we have to find the final speeds of a proton and an electron, after each particle releases at zero speed between a potential difference of 275 V.

We know that, the electric potential energy can be written as,

------------(1)

a)

The initial electric potential energy will be converted into the final kinetic energy.

So, from conservation of energy,

For a proton,

So, the speed of the proton will be .