Keywords: Ground loop.svg ground loop Two circuits share a common ground wire The voltage of the ground connection V<sub>G</sub> should ideally be zero However if the ground conductor has significant resistance R<sub>G</sub> the current flowing through it from circuit 1 will cause a voltage drop across it V<sub>G</sub> I<sub>1</sub>R<sub>G</sub> Since they share the ground wire this voltage appears as unwanted interference in the second circuit V<sub>out</sub> V<sub>2</sub> + V<sub>G</sub> Own Chetvorno 2008-09-12 I Chetvorno the author of this work release it into the public domain for any use whatever Ground loops |