Question : In 1830, which American scientist created the world's most powerful electromagnet, the Albany magnet, which could lift to 750 pounds of metal at a time?
Option 1: John Cockcroft
Option 2: William Gilbert
Option 3: Joseph Henry
Option 4: Edward Mills Purcell
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Correct Answer: Joseph Henry
Solution : The correct option is Joseph Henry.
The Albany magnet was created by Joseph Henry, an American scientist, in 1830. Joseph Henry's electromagnet was one of the most powerful of its time, capable of lifting a maximum of 750 pounds of metal, representing a significant milestone in the development of electromagnet technology.
Henry's work on electromagnets and electromagnetic phenomena contributed to the foundation of modern electrical engineering and played a crucial role in the development of telegraphy and various other electrical applications.
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Question : Which scientist suggested that the magnet must also exert an equal and opposite force on the current-carrying conductor?
Option 1: Michael Faraday
Option 2: André-Marie Ampère
Option 4: William Gilbert
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Option 1: Warren Hastings
Option 2: William Bentinck
Option 3: Charles Metcalfe
Option 4: John Shore
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Option 2: Pierre-Joseph Pelletier
Option 3: Agnes Arber
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Option 2: Henry David
Option 3: Mahatma Gandhi
Option 4: John Ruskin
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Option 1: Benny Andersson
Option 2: John Lennon
Option 3: Elton John
Option 4: Michael Jackson
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