Hi I need help to understand how electric potential could be zero at the center of two equal but opposite charges. It seems, there is a no field free region anywhere inside the space between the charges. If I move a test charge from negative to positive charge or otherwise, there seems to be no point where I will not have to do work or field won't do work, so how could the potential be zero. I saw this example in a book. Mathematically it sounds good but I could not figure it out intuitively. I have read in another book, while searching it, that electric potential at the centre of a charged ring is not zero, although electric field is zero there. It has further put me in confusion that potential is non zero at a place where there is no electric field. That is very counter intuitive. I d be thankful for the replies. High regards.