In the water flow analogy sometimes used to explain electric circuits by comparing them to water-filled pipes, voltage difference is likened to water pressure difference.
The relationship between voltage and current (in ohmic devices) is defined by Ohm's Law.
Read more about this topic: Volt
Famous quotes containing the words water, flow and/or analogy:
““... You ought to have seen how it looked in the rain,
The fruit mixed with water in layers of leaves,
Like two kinds of jewels, a vision for thieves.””
—Robert Frost (1874–1963)
“Water doesn’t flow if it’s level, and people won’t complain if you treat them on the level.”
—Chinese proverb.
“The whole of natural theology ... resolves itself into one simple, though somewhat ambiguous proposition, That the cause or causes of order in the universe probably bear some remote analogy to human intelligence.”
—David Hume (1711–1776)