Q3. Who discovered a relationship between electricity and magneti
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sry i dont know saearch it on googy
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Discovery of Electromagnetism
Oersted's famous experiment showing that electricity and magnetism are linked, took place during a lecture on April 21, 1820, when Oersted was 42 years old. In the experiment he passed electric current through a wire, which caused a nearby magnetic compass needle to move.
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