by radio
television
Battery-powered, of course.
Both use electricity and radio waves to communicate.
The use of electricity to control communication and process information is electro informatics. This branch of informatics deals with storage and retrieval of data through electricity.
to reliant on electricity!!
telegraph
A phone does not change the electricity. They operate on DC power and use frequencies for communication tones
electromagnetism
The role of electricity in the field of electronics is to power electrical, electronic, and communication systems.
Because it helps us live life easier by powering tools, appliances, vehicles, lighting, communication devices and so forth.
Before the phone, but after the common use of electricity, the most common method of communication quickly across country was the telegram. Before electricity, smoke signals were used, or sometimes signal flags of some kind.
When would you use formal communication
Electricity has enabled the development of various devices and technologies such as telephones, computers, and the internet, which have revolutionized communication by allowing for faster, more efficient, and widespread information exchange. By providing power to these devices, electricity has played a crucial role in expanding connectivity and facilitating real-time communication on a global scale.