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What is the probability that a 1200 hr light bulb will burn out in 1000 hrs?
Wiki User
∙ 10y ago
There is not enough information to answer the question but if my personal experience is anything to go by, it is pretty close to 1.
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The largest factor of a light bulb not reaching its expected life expectancy is rough use or vibration. The duty cycle of the lamp also has a bearing on the longevity of the bulb, the more cycling of the lamp the shorter the life will be.
Wiki User
∙ 10y ago
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The probability of a light bulb beinmg faulty is p Out of a pack of three light bulbs What is the probability of all three being faulty?
It is p3.
If a light bulb has a mean of 1400 hours and a standard deviation of 100 hr what is the probability that the light bulb lasts between 1290 hours and 1530 hours?
It is 0.2325
How many kilowatts does a light bulb use?
Thsi depends on the light bulb specification. For example if you buy a standard 60W light bulb from your supmarket then this will consume 0.06kilowatts. Its simple just divide the wattage stated on the light bulb by 1000 to give you the kilowatts
How is electric power of a light bulb measured?
Since the light bulb is purely resistive (has very little reactance), you can just measure the RMS voltage across the light bulb (usually 120 V) and the RMS current going through the light bulb. Power (P) is:P = VRMS x IRMSwatts
What is metaphor for smart?
Shining light bulb
The probability of a light bulb beinmg faulty is p Out of a pack of three light bulbs What is the probability of all three being faulty?
It is p3.
What is the pressure in a light bulb?
1000 Pa
Why does a 100W light bulb cost more than a 1200-W hair dryer does?
A 100 watt light bulb does not cost more that a 1200 watt hair dryer. The average price of a light bulb is about 90 cents whereas a hair dryer can range up to 20 dollars.
What is the bulb type for 1995 Harley Davidson 1200 sportster front left light?
its a 1157 bulb any hardware stores will have them
If a light bulb has a mean of 1400 hours and a standard deviation of 100 hr what is the probability that the light bulb lasts between 1290 hours and 1530 hours?
It is 0.2325
How many mistakes were made before the light bulb was invented?
1000
How many kilowatts does a light bulb use?
Thsi depends on the light bulb specification. For example if you buy a standard 60W light bulb from your supmarket then this will consume 0.06kilowatts. Its simple just divide the wattage stated on the light bulb by 1000 to give you the kilowatts
How much does a light bulb change the temperature of a room?
Very little, but it is noticeable, with a bright light in a small room. A light bulb puts out between 9 watts (energy-saving fluorescent light bulb) to approximately 100 watts (bright incandescent light bulb). Your average bar-heater, for comparison, puts out about between 1200-2400 watts.
What was the most significant invention in the last 1000 years?
computer
What uses more electricity a light bulb or a toaster?
Light bulbs use 7-150 watts, a toaster uses 700-1200 watts.
How many lumens are in a 1000 watt incondescent light bulb?
A 1,000 watt is 15,000 lumens. A 100 watt bulb is 1,500 lumens.
Why did Thomas Edison fail 1000 times?
Edison failed many times - no one knows how many - to make a filament for a light bulb that would last a long time. He did not invent the light bulb - he was working on a BETTER light bulb that would last longer.
