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:
“I will catch Christ with a greased worm,
And when the Prince of Darkness stalks
My bloodstream to its Stygian term . . .
On water the Man-Fisher walks.”
—Robert Lowell (1917–1977)
“For as the interposition of a rivulet, however small, will occasion the line of the phalanx to fluctuate, so any trifling disagreement will be the cause of seditions; but they will not so soon flow from anything else as from the disagreement between virtue and vice, and next to that between poverty and riches.”
—Aristotle (384–322 B.C.)
“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)