I think the term you mean is "candle power" (candelas is a conversion of the power of a bulb in comparison to the power of a candle) The standard 40 watt bulb power would depend on the configuration...
A 100 Watt light bulb from Nella Park should give you about 2000 hours -- if they still make them. A 100 Watt light bulb from overseas, I rather not say.
EXAMPLE: A certain 100-watt bulb emits a total luminous flux of 1200 lm, distributed uniformly over a hemisphere. Find the illuminance and the luminous intensity at a distance of 1 m, and at 5...
Need the voltage or current of the circuit. And the type of lamp (bulb)--is it incandescent, fluorescent, LED, discharge? Also need to know the temperature--the resistance of a tungsten filament...