Question

A metal plate has a charge of -3.0 uc. What will be the potential energy of a proton located 5.0mm away

Answer 1

The potential energy of a proton is
`8.64* 10^(-13)\ J`.

Step-by-step explanation:

We have,

Charge on metal plate is
`-3\ \mu C`

Charge on proton is
`+1.6* 10^(-19)\ C`

Distance between protons is 5 mm

It is required to find the potential energy. The potential energy between two charges is given by :

`U=(kq_1q_2)/(r)\\\\U=(9* 10^9* 3* 10^(-6)* 1.6* 10^(-19))/(5* 10^(-3))\\\\U=8.64* 10^(-13)\ J`

So, the potential energy of a proton is
`8.64* 10^(-13)\ J`.