Change in Potential - Part II

Determine if the change in electric potential energy DPE is positive, negative, or zero for the following situations (Assume particle model for electrons, protons, and hydrogen atoms)::

1. Find DPE for an electron from i to f in diagram f.
2. Find DPE for a hydrogen atom from i to f in diagram f.
3. Find DPE for a proton (assume particle model) from i to f in diagram g.
4. Find DPE for an electron from i to f in diagram h.
   
   
   
   
5. Find DPE for a hydrogen atom from i to f in diagram h.
6. Find DPE for a proton from i to f in diagram h.
7. Find DPE for a proton from i to f in diagram i.
8. Find DPE for an electron from i to f in diagram i.