Virtual Ground

 

https://electricalscience.quora.com/Eric-Dollard-and-Adrian-Marsh?ch=15&oid=130552259&share=7d316f07&srid=3zXXZ&target_type=post

Answer to Why can't current flow through an open circuit? by Mitko Gorgiev…

https://www.quora.com/Why-cant-current-flow-through-an-open-circuit/answer/Mitko-Gorgiev?ch=15&oid=240210315&share=8baf341d&srid=3zXXZ&target_type=answer