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Questions and Answers
What was the main method used by the telegraph to send messages?
What was the main method used by the telegraph to send messages?
- Morse code through radio waves
- Electricity through wires (correct)
- Light signals through optical fibers
- Sound waves through the air
How many wires and needles were used in the telegraph invented in Great Britain in the 1830s?
How many wires and needles were used in the telegraph invented in Great Britain in the 1830s?
- Four wires and three needles
- Ten wires and nine needles
- Six wires and five needles (correct)
- Eight wires and seven needles
What part of the telegraph sent electric currents through the wires?
What part of the telegraph sent electric currents through the wires?
- Needles
- Transmitter (correct)
- Receiver
- Plate
How did the receiver of the telegraph spell out messages?
How did the receiver of the telegraph spell out messages?
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