Just one. But it takes five episodes.
None - the lightbulb has the capacity for its own revolution
None. The sockets all went with the house.
Seven. One to install the bulb and six to figure out what to do with the old one for the next 10,000 years
He was changing the lightbulb before it was cool. rimshot
FIND OUT NEXT TIME ON DRAGON BALL Z
Because in charge Yoda was.
Only one, but it'll take at least 6 episodes!