It turns it into light, and some heat.
Assuming it's a filament (incandescent) bulb, no. When a bulb burns out, the tiny wire in the bulb is broken, and the electricity can no longer pass through the bulb. It's the same as if it was switched off.
No
A 75 bulb will use more electricity.
yes
It depends on the wattage of the toaster. If the toaster has a wattage greater than 100W, then it will use more electricity than a 100W light bulb. If the toaster has a wattage less than 100W, then the light bulb will use more electricity.
no
um, electricity?
Yes
your question makes no sense, to USE electricity? GENERATE electricity? I think to use.
because light bulbs use electricity ,and candles use fire, and electricity last longer
electricity because a light bulb needs electricity
No, a light fixture does not consume electricity if there is no bulb in it. The bulb is what generates light when electricity passes through it, so without a bulb, there is no circuit to complete and no electricity is being used.