I forgot how to relate the potential energy to electrical charge on the last que

Question

I forgot how to relate the potential energy to electrical charge on the last question.

Questions 4 through & pertain to the sstuetion drscribod below Assume that helium ion Het can be treated as a classical wntem of an electron of charge -e golng arosnd a nucleus of charge 2e cn a circle cé radius 2.65 x 10-11. Electric potential enerryr is zero wheen chares are inlinitely apart. 4) What is the electrie field (magsitude) elt by the electroe 1.10 TV/:(B) 4.00 TV/: (C)5.10TV/x: (D) 5.60 TV/m: E) 6.10 IV/m (A) 69.6 V: (B) 89.5 V: 100 V: (D) 129 V: (E) 149 v. (A) 27.4ev: (B) S4e: (C)81.2V: (D) 108 V: (E) 133 oV (5) What is the electric potential felt by the electron? (6) Wunt is the ionization energy of the electron? E , av: EAD : H.ic, TE.1(a ,

Explanation / Answer

Ionisation Energy = e*v
Here e is the charge of an electron, but as they are asking in terms of ev so we don't need to convert it.

Ionisation Energy = 108 eV

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