connected, linked, on (switched on)
Don't leave the TV on.
Minha ideia de cinema sempre esteve ligada à brisa das noites de verão.
My idea of cinema has always been linked to the breeze of summer nights.
— Dor e Glória (2019)
Who left the TV on?
Tom deixou a televisão ligada a noite toda.
Tom left the television on all night.
Dormir com a televisão ligada não é bom para o cérebro.
Sleeping with the television on is not good for the brain.
A televisão estava ligada, mas ninguém assistia.
The television was on, but nobody was watching.
Tom deixa sua TV ligada o dia inteiro.
Tom leaves his TV on all day.