Why is the earth not used as a return wire in a telephone
system, while it is dine so in case of telegraph system.
Answer / sanju
Because the currents operating the two receivers at the two
ends of a telephone system are comparatively much feeble
than that of a telegraph system.
| Is This Answer Correct ? | 0 Yes | 0 No |
What is Real image ?
How is radiation emitted from the body?
At what temperature does the filament of electric bulb glows ?
Why so coloured clothes sometimes fade in sunlight ?
What is Alum?
Explain the difference between isolation transformers and step up or step down transformer?
What is Caustic soda ?
What are the 4 results of the photoelectric effect experiments? : quantum physics
Why dies a cricket player lower his hands, while catching the ball ?
how sunlight produce e.m wave in vacuum?
What forces support an airplane in flight?
Why is mercury used in thermometers rather than water?