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yes. because you have to plug in the radio which is electrical and then when you

turn on the radio it produces sound. even if it's a battery powered radio, the battery

stores energy in the form of chemical energy, but delivers it as electrical energy, so

even in that radio, the radio is converting electrical energy to sound energy when

you turn on the radio.

What about an old-fashioned "crystal set" that has no battery and doesn't plug into

the wall ? Even that one converts electrical energy into sound. The only electrical

energy it ever gets is what it picks out of the air that got transmitted from the radio

station. That's very very little energy, which is why the sound from a crystal set is

always so weak.

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12y ago

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