GK
INVENTIONS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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How was the telegraph different from the telephone?
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The telephone could both send and receive information; the telegraph could only receive information
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The telephone could transmit information over long distances; the telegraph only worked over short distances
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The telephone could transmit a human voice; the telegraph could only transmit electric pulses
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The telegraph needed wires to transmit messages; the telephone was originally a wireless device
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Explanation:
Detailed explanation-1: -A telegraph is a communication system that sends information by making and breaking an electrical connection. It is most associated with sending electrical current pulses along a wire with Morse code encoding.
Detailed explanation-2: -There are four primary types of telegraph machines: optical telegraphs, electrical telegraphs, Morse telegraphs, and wireless telegraphs. Eventually, transcontinental telegraph lines were established for worldwide communication, too.
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