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Which of the following inventions were done by Thomas Alva Edi
Which of the following inventions were done by Thomas Alva Edison?
(A) Incandescent lamp
0 votes (0%)
(A) Incandescent lamp
(B) Phonograph C (Gramophone) and microphone
0 votes (0%)
(B) Phonograph C (Gramophone) and microphone
(C) Carbon telephone transmitters
0 votes (0%)
(C) Carbon telephone transmitters
(D) All of the above
1 vote (100%)
(D) All of the above
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