In 1830, which American scientist created the world's most powerful electromagnet, the Albany magnet, which could lift 750 pounds of metal at a time?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is Option 3 i.e. Joseph Henry.
In 1830, the American scientist Joseph Henry created the world's most powerful electromagnet, known as the Albany magnet. This electromagnet was remarkable for its time, capable of lifting up to 750 pounds of metal. Joseph Henry’s work significantly advanced the study of electromagnetism and laid important foundations for future developments in electrical engineering and technology. His experiments with electromagnets greatly influenced the invention of the telegraph and other electrical devices.