Bill,
Great Qs!!!
One of the major factors here is what the load current is past the lamp's screwshell. This will give the complete voltage drop [total current in circuit] at that point.
This Q kinda' looks like it's the spawn of the Mike Holt Forum thread about standing on the ground rod and grabbing hot wires - which turned into a Hot File [>15 posts].
You have a valid thought on the Inrush current the Incandescent Lamp will have - it might have an effect on the results. That inrush, for the most part, is looking at maybe a R of 17 OHMs for a cold-fillament on a 120 VAC 60 Watt A17 lamp. That would last maybe 1/30 second [2 cycles], upto 1/8 second [8 cycles], then taper down to a running value [hot-fillament] within 2 seconds [120 cycles].
Don has given better numbers than I can, so I'll not complicate the thread with jibberish.
Scott SET
