Quoted from Star_Gazer:
Can i place a check stamp on this one?...what's up with the " resistor" ?
Lamps_03.jpg (Click image to enlarge)
This image has correct parallel circuit on the left and correct series circuit on the right. I would change the parallel one to be more like the red and green lines in picture 2, its easier to see the parallel nature of the circuit for most people drawn that way.
As other have said, incandescent lamps are basically resistors. If you have several of the same in parallel, your voltage will be the same to each bulb but the current draw (amps) will go up. For example, in your circuit with 3 bulbs, if each is a standard #44 pinball bulb, each is 6.3V (call it 6v) and draw .25 amps. So your parallel circuit will draw 3 X .25A = .75A at 6V
The series circuit will need 3 X 6V = 18V but since they are in series, the current is the same as one at .25A