A proton is taken from point P_1 to point P_2, both located in an electric field. The potentials at points P_1 and P_2 are -5 V and +5 V…

A proton is taken from point $\displaystyle \mathrm{P}_{1}$ to point $\displaystyle \mathrm{P}_{2}$, both located in an electric field. The potentials at points $\displaystyle \mathrm{P}_{1}$ and $\displaystyle \mathrm{P}_{2}$ are -$\displaystyle 5$ V and +$\displaystyle 5$ V respectively. Assuming that kinetic energies of the proton at points $\displaystyle \mathrm{P}_{1}$ and $\displaystyle \mathrm{P}_{2}$ are zero, the work done on the proton is :