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 are the characteristics of black body? : quantum physics
what is relation between magnetic and electricity and why?
If a dog rolled around on a carpet and gets statically and a flea jumps on it will the flea get electrocuted?
Why does the moon shine, evening though it has not light of its own ?
why the air temperature drops more on clear nights than on cloudy nights?
If f equals electric force, and q and q (read as: q-prime) are the charges on two particles, the expression f is proportional to q times q prime divided by distancesquared is what law?
Explain the Principle of Calorimetry ?
What is horse-power ?
What is physical significance of wave function? : quantum physics
in one optical instrument, what is the effect of usingtwo converging lenses?
Explain the Machines ?
What is sound velocity?