How do telephones work?
Telephones work by sending and receiving electrical signals which represent sounds. When we dial a number a signal passes to another telephone which makes it ring. When the telephone is picked up, a connection is made and people can talk to each other over the phone.
Related posts:
What causes typhoid fever? Complete General Knowledge Question and Answer for Class 6, 7, 8, 9, 10, ...
General Knowledge
Can a porcupine shoot its quills? Complete General Knowledge Question and Answer for Class 6, 7, 8, ...
General Knowledge
What is a bloodhound? Complete General Knowledge Question and Answer for Class 6, 7, 8, 9, 10, 11 an...
General Knowledge
What are the common features of living things? Complete General Knowledge Question and Answer for Cl...
General Knowledge
Why do baby turtles have a tooth on their nose? Complete General Knowledge Question and Answer for C...
General Knowledge
Why is the number 13 believed to be unlucky? Complete General Knowledge Question and Answer for Clas...
General Knowledge
How deep can a turtle dive? Complete General Knowledge Question and Answer for Class 6, 7, 8, 9, 10,...
General Knowledge
Do you know “Crystal lingams of Ranbireshwar temple".
Do you know
Why does cork float? Complete General Knowledge Question and Answer for Class 6, 7, 8, 9, 10, 11 and...
General Knowledge
Why does ice float? Complete General Knowledge Question and Answer for Class 6, 7, 8, 9, 10, 11 and ...
General Knowledge
GK Question "What Is The Speed Of Sound?" general knowledge book English 2021 current affairs quiz a...
General Knowledge
What did the Romans trade? Complete General Knowledge Question and Answer for Class 6, 7, 8, 9, 10, ...
General Knowledge
What were the laws introduced by Hammurabi? Complete General Knowledge Question and Answer for Class...
General Knowledge
Do animals mate for life?Complete General Knowledge Question and Answer for Class 6, 7, 8, 9, 10, 11...
General Knowledge
Which snake writes in the sand? Complete General Knowledge Question and Answer for Class 6, 7, 8, 9,...
General Knowledge
Could the Mayans read and write? Complete General Knowledge Question and Answer for Class 6, 7, 8, 9...
General Knowledge
Why do astronauts float in space? Complete General Knowledge Question and Answer for Class 6, 7, 8, ...
General Knowledge
Who discovered the light year? Complete General Knowledge Question and Answer for Class 6, 7, 8, 9, ...
General Knowledge
Do you know "End of the telegram era in India".
General Knowledge
Which is the biggest planet?Complete General Knowledge Question and Answer for Class 6, 7, 8, 9, 10,...
General Knowledge