Answer:
The potential energy of a proton is [tex]8.64\times 10^{-13}\ J[/tex].
Explanation:
We have,
Charge on metal plate is [tex]-3\ \mu C[/tex]
Charge on proton is [tex]+1.6\times 10^{-19}\ C[/tex]
Distance between protons is 5 mm
It is required to find the potential energy. The potential energy between two charges is given by :
[tex]U=\dfrac{kq_1q_2}{r}\\\\U=\dfrac{9\times 10^9\times 3\times 10^{-6}\times 1.6\times 10^{-19}}{5\times 10^{-3}}\\\\U=8.64\times 10^{-13}\ J[/tex]
So, the potential energy of a proton is [tex]8.64\times 10^{-13}\ J[/tex].
