# What do we mean by “ground” in an electrical circuit? [duplicate]

What do we mean by ground in an electrical circuit? When we want to solve electrical circuits problems, we set a "ground" level which is mean that the potential on it equal to $0$. I wonder how the current will flow if the potential at a point equal to zero.

• This question belongs on Electrical Engineering StackExchange – Jim Apr 6 '14 at 14:18
• The "What is ground?" question has come up on EE.SE quite a few time. See here, here. There are more threads about ground, so don't hesitate to do some searching. – Nick Alexeev Apr 6 '14 at 18:07