9V battery testing; Thevenin equivalent; car headlamps.
"Joop van der Velden"
No, the resistance will increase by a factor of 2 or 3 as the lamp
gets hotter.
** More like 10 or 12 times, actually.
Depends just how white hot the filament becomes.
Halogen projector lamps with 50 hour rated live increase by a factor of
about 16.
........ Phil
|