Do 75 watt light bulbs use more electricity than 25 watt bulbs? If so how?

Answer 1

All interesting answers, and yes, 75 watt bulbs cost more to use. No one has mentioned the use of CFB (compact fluorescent bulbs). Using CFB that will give you the same light output as a 75 watt incandescent bulb, you may only use a third of the power to get the same light (lumens) output. They last 8 to 10 times longer, don't run as hot and cost a lot less to use. "IF EVERY HOUSE IN THE USA JUST CHANGES FROM ONE REGULAR BULB TO A COMPACT FLUORESCENT BULB, THE ENERGY SAVED IS EQUAL TO TAKING 1 MILLION CARS OFF THE ROAD." The bulb changed out must be one of the most used lights in the house to make a difference. They cost a little more, but are worth it in the long run.

Answer 2

25 Watt Light Bulbs

Answer 3

Wattage is a measure of "work" done by an electrical device. The greater the wattage, the more work the device is performing, and the more power is being used. Your electric company charges you for the number of "kilo (thousand) watt hours" used during the billing period. During any given time period of operation, a 75 watt bulb uses three times the energy used by a 25 watt bulb, and costs three times as much to operate. In the case of a light bulb, the work done is pushing electrical current through the resistance provided by the filament in the light bulb; the greater the resistance, the hotter the filiment, the more lumens of light produced.

Answer 4

Maybe you shouldn't have used the 100 watt bulb. Most lamps/light fixtures require 60 watts! If I were you, I'd check to see if there is anything on that fixture that tells what wattage to use. To answer your question, 75 is less than 100, so I am sure you can use a lower wattage.

Answer 5

This is a joke question, isn't it?
No one can be this dumb.

As resistance (R) is reduced current (I) increases.
Power consumption (P) is a product of voltage and amperage,
(P = I x E).
With voltage remaining constant, then wattage increases.
Electrical usage is determined by wattage used.

Therefore: The 75 watt lightbulb costs three times as much to operate as the 25 watt bulb. But the lumen output is also greater from the 75 watt bulb.

Answer 6

Yeah they do. Your electric bill is based on kilowatt useage, that is 1000 watt units. Figure how many hours the light is on and figure the number of "kilos" used for each bulb. Then multiply that by your kilowatt rate on your electricity bill. For example the 25 watt bulb left on 24/7 for the month would be 18 kilowatts. If you kilowatt price is say 0.50, then it cost $9 per month to run the 25 watt bulb 24/7. The 75 watt would be $2.10 per month

Answer 7

The filiment inside the bulb on a 75 watt light is designed to draw more watts due to a combination of thickness and length. also the filiment itself can be made of different materials depending on the color of light the bulb was designed to produce.

Answer 8

Wow allot of answers that have no meaning, the energy usage is demand, which is amps converted to watts, resistance is around the frequency of volts pushing amps to the load, being a light bulb, so the distance of the wire and size dictates the current draw, i would use the lower watt bulbs if they satisfied my pleasure so it would save me money, in retrospect if you used a higher watt bulb for the same it could cost you the same, if you get the theory and engineering of lighting systems and thru wiring, when lights go out around town they always well how come mine are still out, well the supply and demand rules.

Answer 9

logic tells me it would.....it would take more electricity to make something burn brighter

anytime u convert power to a light source u create heat and the more u need the more it cost to run it....

think of a toaster...a 500 watt toaster will use less electricity than a 800 watt toaster but the 800 watt toaster will get hotter and create more heat....and cook faster.....

Answer 10

Watts is power used, so yes a 75w lamp consumes more than a 25w lamp. I (current) = P (power in watts)/ E (voltage)