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:
When was the crossword puzzle invented? Complete General Knowledge Question and Answer for Class 6, ...
General Knowledge
What is hard water? Complete General Knowledge Question and Answer for Class 6, 7, 8, 9, 10, 11 and ...
General Knowledge
What are puffins? Complete General Knowledge Question and Answer for Class 6, 7, 8, 9, 10, 11 and 12...
General Knowledge
Hindi Moral Story "Apna Hath Jaganath”, "अपना हाथ जगनाथ” for Kids, Full length Educational Story for...
General Knowledge
What is a toucan? Complete General Knowledge Question and Answer for Class 6, 7, 8, 9, 10, 11 and 12...
General Knowledge
Do you know “Napolean's bed”.
General Knowledge
Who are Mormons? Complete General Knowledge Question and Answer for Class 6, 7, 8, 9, 10, 11 and 12 ...
General Knowledge
GK Question "What Is The Speed Of Sound?" general knowledge book English 2021 current affairs quiz a...
General Knowledge
What shapes Mercury's surface? Complete General Knowledge Question and Answer for Class 6, 7, 8, 9, ...
General Knowledge
GK Question "When The Man Started Drinking Milk?" general knowledge book English 2021 current affair...
General Knowledge
What makes hair curly or straight? Complete General Knowledge Question and Answer for Class 6, 7, 8,...
General Knowledge
Do you know “Braille printer made of LEGO blocks”.
Do you know
Which birds cannot fly? Complete General Knowledge Question and Answer for Class 6, 7, 8, 9, 10, 11 ...
General Knowledge
How do lobsters grow? Complete General Knowledge Question and Answer for Class 6, 7, 8, 9, 10, 11 an...
General Knowledge
Who invented printing? Complete General Knowledge Question and Answer for Class 6, 7, 8, 9, 10, 11 a...
General Knowledge
What was an acropolis? Complete General Knowledge Question and Answer for Class 6, 7, 8, 9, 10, 11 a...
General Knowledge
What is smelting? Complete General Knowledge Question and Answer for Class 6, 7, 8, 9, 10, 11 and 12...
General Knowledge
GK Question "How Does A Duck Float?" general knowledge book English 2021 current affairs quiz and an...
General Knowledge
What is will-o'-the-wisp? Complete General Knowledge Question and Answer for Class 6, 7, 8, 9, 10, 1...
General Knowledge
Who invented writing? Complete General Knowledge Question and Answer for Class 6, 7, 8, 9, 10, 11 an...
General Knowledge
