A radio primarily uses electrical energy to operate. This electrical energy is converted into sound energy, allowing us to hear the audio broadcasted through radio waves.
When you plug a radio into an outlet or use batteries, it draws electrical power. Inside, components like circuits and amplifiers work together to process the radio signals received by the antenna. The radio then converts these signals into sound waves that we can listen to. In essence, the energy takes a journey from its electrical form to a more usable form for our ears, illustrating the fascinating transformation of energy types in everyday devices.