Inventions and Discoveries


86. Who invented the first electric generator?
a) Michael Faraday
b) Thomas Edison
c) Nikola Tesla
d) George Westinghouse

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87. Who discovered the phenomenon of radio waves?
a) Heinrich Hertz
b) James Clerk Maxwell
c) Guglielmo Marconi
d) Nikola Tesla

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88. Who invented the first successful submarine?
a) John Philip Holland
b) Robert Fulton
c) David Bushnell
d) Cornelius Drebbel

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89. Who discovered the law of specific heats?
a) Joseph Black
b) James Clerk Maxwell
c) Heinrich Hertz
d) Robert Boyle

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90. Who invented the first successful electric motor?
a) Michael Faraday
b) Thomas Edison
c) Nikola Tesla
d) George Westinghouse

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