Magnetic effect of electric current was observed bya)W.H.Whitkarb)Newtonc)Galileod)H.C.OerstedCorrect answer is option 'D'. Can you explain this answer?

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H.c.oersted

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Magnetic effect of electric current was observed by H.C.Oersted

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This information is not present in the nevertheless textbook

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D is the answer as Hans Christian Orested was the first person who  noticed the deflection of compass needle  and magnetic effect of current

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Option D

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Option d is correct

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H. c. oersted

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The correct answer is option 'D', H.C. Oersted, who observed the magnetic effect of electric current. Here is an explanation of the answer:

1. Introduction:
The magnetic effect of electric current refers to the phenomenon where an electric current produces a magnetic field around it. This discovery was made by H.C. Oersted, a Danish physicist, in the early 19th century.

2. H.C. Oersted:
Hans Christian Oersted was a professor of physics at the University of Copenhagen. In 1820, while demonstrating an experiment on the relationship between electricity and magnetism, he made a significant observation.

3. The Experiment:
Oersted conducted an experiment where he placed a compass needle near a wire through which an electric current was flowing. He expected the needle to remain unaffected since there was no direct interaction between the compass and the wire. However, to his surprise, he observed that the needle deflected from its usual position and aligned itself perpendicular to the wire.

4. Magnetic Field:
Based on his observation, Oersted concluded that the electric current in the wire produced a magnetic field around it, which interacted with the compass needle. This discovery laid the foundation for the understanding of the relationship between electricity and magnetism.

5. Significance:
Oersted's discovery was groundbreaking as it established the fundamental connection between electricity and magnetism. It led to further research and experiments by other scientists, such as André-Marie Ampère and Michael Faraday, who expanded our understanding of electromagnetism.

6. Applications:
The magnetic effect of electric current has numerous practical applications in our daily lives. It is the principle behind electric motors, generators, transformers, and many other electrical devices. Understanding this phenomenon has revolutionized the field of technology and has paved the way for innovations in various industries.

Conclusion:
Thus, H.C. Oersted's observation of the magnetic effect of electric current was a significant milestone in the history of science. His experiment demonstrated the interplay between electricity and magnetism and laid the foundation for the development of electromagnetism as a field of study.

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