Question

Who discovered when an compase needle is kept near the electric circuit in which current is flowing it deflect?

Answer 1

Hans Christian Oersted, one of the leading scientists of the 19th century, played a crucial role in understanding electromagnetism.In 1820 he accidentally discovered that a compass needle got deflected when an electric current passed through a metallic wire placed nearby. 

Answer 2

Answer:

the given figures show the path of light through lenses of two different types represent by rectangular boxes A and B