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 is pitch? Complete General Knowledge Question and Answer for Class 6, 7, 8, 9, 10, 11 and 12 St...
General Knowledge
Do you know “Great women scientists”.
Do you know
GK Question "The First False Teeth Were Made By Whom?" general knowledge book English 2021 current a...
General Knowledge
GK Question "Which Is The Deepest Ocean?" general knowledge book English 2021 current affairs quiz a...
General Knowledge
How does cement harden? Complete General Knowledge Question and Answer for Class 6, 7, 8, 9, 10, 11 ...
General Knowledge
Why do people wear black for mourning? Complete General Knowledge Question and Answer for Class 6, 7...
General Knowledge
Were dinosaurs' eggs also big? Complete General Knowledge Question and Answer for Class 6, 7, 8, 9, ...
General Knowledge
Which dinosaurs had the heaviest bones? Complete General Knowledge Question and Answer for Class 6, ...
General Knowledge
Do you know “Only Asian in ITWA”.
Do you know
How does a thermometer work? Complete General Knowledge Question and Answer for Class 6, 7, 8, 9, 10...
General Knowledge
Why does the chameleon change colours? Complete General Knowledge Question and Answer for Class 6, 7...
General Knowledge
Do you know “The largest church in Asia”.
Do you know
What causes high tides? Complete General Knowledge Question and Answer for Class 6, 7, 8, 9, 10, 11 ...
General Knowledge
GK Question "What Lead To The Discovery Of Fire" general knowledge book English 2021 current affairs...
General Knowledge
GK Question "How Is It, That The Birds Sing?" general knowledge book English 2021 current affairs qu...
General Knowledge
GK Question "What Is The Cause Of Waves In Water?" general knowledge book English 2021 current affai...
General Knowledge
When were the first permanent buildings built? Complete General Knowledge Question and Answer for Cl...
General Knowledge
Why do astronauts wear spacesuits? Complete General Knowledge Question and Answer for Class 6, 7, 8,...
General Knowledge
Why is Venus so hot? Complete General Knowledge Question and Answer for Class 6, 7, 8, 9, 10, 11 and...
General Knowledge
What is latent heat? Complete General Knowledge Question and Answer for Class 6, 7, 8, 9, 10, 11 and...
General Knowledge
