How do telephones work? Complete General Knowledge Question and Answer for Class 6, 7, 8, 9, 10, 11 and 12 Students CBSE Exams.

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.