Usage patterns
ランプをつけるto turn on a lamp
Since the room got dark, I turned on the lamp.
ランプを消すto turn off a lamp
I turned off the lamp before going to sleep.
ランプが点灯するthe lamp lights up / turns on
When I started the car engine, the warning lamp lit up.
ランプが切れるthe lamp burns out
The lamp at the entrance burned out.
ランプの下で〈動詞〉to do something by lamplight
I read a book by lamplight.