Without a bulb energy cant go through and it would be an open circuit blocking the energy from coming out.
You draw a straight line from the start point to the end point. It doesn't matter what route was actually followed for the trip.
Well, I'm not sure right now that it actually does.
But if it does, that's because the sun is about 400 times
FARTHER from the Earth than the moon is.
Read each statement, one at a time, and form the picture in your mind.
<em>Statement #1</em> should make you feel all warm and fuzzy inside.
Statements #2, #3, and #4 should make your red flag wave on the inside, and should make you giggle on the outside when you realize how absurd each of those is.