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which has more resistance 100 watt bulb or 60 watt bulb?
In short, the 60 watt bulb has more resistance.
Power can be calculated using the following formula: P = (V^2)/R The power rating for a light bulb is measured using a 120 Volt source. Since the voltage will be the same for both light bulbs, using the formula, the bulb with the lowest resistance would have the greatest power.
Wiki User
∙ 15y ago
Wiki User
∙ 11y agoLet's assume that the supplied voltage to both bulbs are the same and you're using it in North America where the voltage is 120V.
Power = V^2/R
Resistance = Voltage^2 / Power
R = 120^2 / 100W = 144 ohms
R = 120^2 / 75W = 192 ohms
Yes, the lower wattage bulb has more resistance.
Through the formula I=V/R, you can see that when resistance increases, current decreases, when voltages supplied to both bulbs are the same. Now because the voltages supplied to both bulbs are the same, we can use the current to determine the brightness. (Normally we would use power. The higher the wattage, the brighter the bulb.) Because voltage is constant, power in the formula P=IV increases proportionally with current. Thus the higher the current, the brighter the bulb.
Wiki User
∙ 14y ago"75 watt" is a typical rating for a filament type incandescent light bulb. Ratings should be specified by each manufacturer on the box. Depending on the actual voltage applied, number of on off cycles, and ambient air temperatures these will change. Higher voltage burns the filament hotter and decreasing its lifespan. Lower voltage will increase the life of the filament (but also make it burn dimmer). Dimming circuits will help increase the life. I typically see incandescent light bulbs rated less than 1500 hours although Kayline advertises up to 10,000 hours. The bulbs are actually rated for 135 Volts and used in a 120 volt household circuit.
Wiki User
∙ 11y agoTo determine the number of amps, figure the voltage across the bulb and divide the number of Watts (75) by the number of Volts (120) and you should have an answer of 625 milliAmps of 5/8 Amp. If voltage is different, so will the current be, but the formula is the same.
Wiki User
∙ 9y agoThe difference between the power of a 100 watt bulb and a 75 watt bulb is 25 watts. A 100 watt bulb will burn about 25 percent brighter than a 75 watt bulb.
Wiki User
∙ 15y agoA 75 watt light bulb has more resistance because less current is going through which causes less light.
Wiki User
∙ 12y agoI would say a 75 because they use them for spotlights but I'm not always correct but i think its 75
Wiki User
∙ 9y agoA standard household 75 watt bulb in the US uses 0.625 amps. Amps are calculated by dividing the number of watts by the amount of voltage.
Wiki User
∙ 14y agop = v * i
75w = 120v * i
i = 75w / 120v
i = .625A
v = i * R
120V = .625A * R
R = 120V / .625A
R = 192 ohm
Wiki User
∙ 10y agoAssuming they both run at the same voltage, the one with less resistance will draw more current and more power.
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How bright is 1000 lumens?
It is equivalent to a 75 watt incandescent bulb
Can I use a 60 watt bulb in a 75 watt bulb ceiling fan?
Yes.
Difference between 40 watt and 60 watt bulb base?
NO Incandescents produce 10 lumens per watt, halogens about 13 lumens per watt, fluorescents and LEDs 40-50 lumens per watt. Lumens measure the brightness, watts measure the speed at which electrical energy is used.
How hot does a 75 watt reptile basking bulb get?
It depends on the bulb
How many watts per hour does 75 watt bulb use?
The bulb's power, 75 watts, is the power it uses continuously all the time it is switched on. The energy it uses can be measured in watt-seconds (Joules) or in watt-hours. A 75 watt bulb uses 75 watt-hours each hour, which is 0.075 kilowatt-hour.
How bright is 1000 lumens?
It is equivalent to a 75 watt incandescent bulb
What is the lumen output for a 35W halogen?
It varies from about 600 to 1100 lumens. Typically the higher the lumens output, the shorter the lifespan of the globe. Have a look at this list of globes for purchase whih shows wattage and lumens: http://1000bulbs.com/category/75-watt-incandescent-standard-shape-light-bulbs/
Which would use more energy a 50 watt bulb or a 75 watt bulb?
A 75 bulb will use more electricity.
How many 75 watt fluorescent bulbs are needed to give as much light as a 75 watt incandescent bulb?
A 15-watt fluorescent should produce about as much light as a 75-watt incandescent.
Can I use a 60 watt bulb in a 75 watt bulb ceiling fan?
Yes.
Difference between 40 watt and 60 watt bulb base?
NO Incandescents produce 10 lumens per watt, halogens about 13 lumens per watt, fluorescents and LEDs 40-50 lumens per watt. Lumens measure the brightness, watts measure the speed at which electrical energy is used.
How many lumen's are in a 36 watt T8 fluorescent tube?
2300lm Comment I think you mean lumens, not lumen's. No that answer is wrong Watts (energy usage) / Lumens (light output) 25 is equal to 200 35 is equal to 325 40 is equal to 450 60 is equal to 800 75 is equal to 1100 100 is equal to 1600 125 is equal to 2000 150 is equal to 2600 36 watts would be about 350 Lumens
How hot does a 75 watt reptile basking bulb get?
It depends on the bulb
How many watts per hour does 75 watt bulb use?
The bulb's power, 75 watts, is the power it uses continuously all the time it is switched on. The energy it uses can be measured in watt-seconds (Joules) or in watt-hours. A 75 watt bulb uses 75 watt-hours each hour, which is 0.075 kilowatt-hour.
How many amps in a small table lamp?
A 120 volt table lamp with a 75 watt bulb will pull 0.625 amps. With a 100 watt bulb it will pull 0.833 amps. And with a modern fluorescent 13 watt bulb it will pull 0.108 amps.
How long does it take water to evaporate under a 75 watt light bulb?
This depends on many factors.
How much time is required for an operating 75 watt light bulb to dissipate 10 joules of energy?
1 Joule = 1 Watt.sec, ie 1 Watt for 1 second. A 75 Watt bulb dissipates 75 Joules every second, so the answer is 10/75 of a second = 0.1333 seconds
