Calculating Electric Field and Force in Singly Ionized Helium Atom

[Suy]

Homework Statement

the helium atom contains two protons in its nucleus. when helium is singly ionized, one of its two electrons is completely removed. the remaining electron orbits the nucleus at a radius of 2.65*10^-11
a) what is the electric field strength created at the location of the electron by the nucleus?
b)what is the electrostatic force acting on the electron?

Homework Equations

The Attempt at a Solution

Just wondering , the question said the helium atom contains two protons, the charge of one proton is +1.60*10^-19, for a) do i multiply by 2? or the value 1.60*10^-19C stay the same?

 

[rl.bhat]

Net charge in the nucleus is +2e, where e is the charge on the proton.

 

[Suy]

is that mean I have to use the net charge for a)?
ty

 

[rl.bhat]

is that mean I have to use the net charge?
ty

Yes.

 

[Suy]

ok ty very much :)