Q. Electromagnetic Field concept was observed and discovered by whom?
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Answer:
Hans Christian Oersted
The field of electromagnetism was only six years old when Henry began teaching at the Albany Academy in New York. Danish scientist Hans Christian Oersted had discovered in 1820 that an electrical current in a wire from a battery caused a nearby compass needle to deflect.
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Answer:
James Hargreaves.
:) ;)
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