Less than 0.02 watt/hours. Running your 100w bulb for an hour uses 100 watt/hours. The inrush current during the cold resistance of the bulb lasts for only a millisecond before the bulb is hot. This is insignificant on your electric bill even if you sat and flicked the lightswitch for the whole month, and is a common misconception that someone who didn't know what they were talking about made up.
no
A 100 watt light bulb draws a little less than one amp. A refrigerator draws much more when compressor is running. The duty cycle of the light and refrigerator will ultimately determine which uses more power on a Kilowatt Hour basis.
yes
Probably not. Sodium light fixtures generally have a "ballast".
It uses modern technology to give better efficiency. A filament bulb has an incandescent (hot) piece of tungsten wire, which produces light but also heat. A fluorescent bulb uses a different process to produce more light and less heat.
no
1500
if there a light fixture under the floor (on the ceiling of the room underneath) the heat will eventually rise. this is most frequent when there is an incandesent light fixture in an uninsulated floor (like a basement 100w light bulb is left on) something like 90% of electricity used by a 100w bulb is heat.
Very little ! About the same as an ordinary 100W light-bulb. Most of the time, it's just sat there in 'stand-by mode' waiting for someone to insert their card.
Power = Energy/time 100W=Energy/360 Seconds Energy = 100/360 Energy ≈ 0.27 Joules
no
The 100w light bulbs were no longer being manufactured by 1st September 2009. Although some people still have these types of lights around their homes, the manufacturing companies has stop producing them.
A 100 watt light bulb draws a little less than one amp. A refrigerator draws much more when compressor is running. The duty cycle of the light and refrigerator will ultimately determine which uses more power on a Kilowatt Hour basis.
yes
Assume the rating of 100W refers to operation on a supply of 117 volts.Power = (voltage) x (current)Current = (power) / (voltage) = 100/117 = 0.855 ampere (rounded)Power = (voltage)2 / (resistance)Resistance = (voltage)2 / (power) = (117)2 / 100 = 136.89 ohms
what continent is 80s, 100w
A kilowatt by definition is the equivalent of "1,000 watts for one hour". It is the way the electric company measures power usage. One "half kilowatt": Imagine you have five 100W light bulbs burning in various places in your house. After one hour, you have used one-half kilowatt of electricity.