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Who discover magnetic field of electric current?

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posted Nov 22, 2015 by Vikas Upadhyay

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First, in 1819, Hans Christian Oersted discovered that an electric current generates a magnetic field encircling it. Then in 1820, André-Marie Ampère showed that parallel wires having currents in the same direction attract one another.

answer Nov 26, 2015 by Manikandan J
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