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7 April, 11:36

Who developed a machine that allowed sound waves to travel across a wire as an electrical current?

A) Alexander Graham Bell

B) Thomas Edison

C) Lewis Latimer

D) William Kelly

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Answers (2)
  1. 7 April, 14:40
    0
    A) Alexander graham bell
  2. 7 April, 14:55
    0
    The man who have developed a machine that allowed sound waves to travel across a wire as an electrical current was known to be called Alexander Graham Bell
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