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Why direction of current and electron is opposite?


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September 29, 2013 8:48PM

Current in metal conductors is a flow of electrons, from the negative terminal to the positive terminal of the supply.

Before the discovery of atomic structure, scientists like Benjamin Franklin believed that an electric current was some sort of 'fluid' that travelled from an area of higher pressure to an area of lower pressure. The 'higher pressure' was considered to be 'positive' and the 'lower pressure' was considered to be 'negative', so current was considered to flow from positive to negative. This error was compounded by Sir Michael Faraday, whose experiments in electrolysis seemed to confirm this current direction.

To differentiate between the two 'flows', the second is called 'Conventional' or 'Franklinian' flow. Unfortunately, conventional flow is still used in a great many textbooks.