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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 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 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
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.
How much does a light bulb change the temperature of a room?
A light bulb typically generates a small amount of heat, but it is usually negligible in terms of changing the overall temperature of a room. The impact it has on room temperature will depend on factors such as the wattage of the bulb and the size of the room.
Why does a 100W light bulb cost more than a 1200-W hair dryer does?
The cost of a light bulb is higher due to factors such as the materials used, manufacturing process, and design specifications. Hair dryers may be less expensive because they are often mass-produced, using simpler components and assembly processes. Additionally, the demand and competition in the market for each product can influence pricing.
What American inventor patented over 1000 inventions inlcuding the light bulb and phonograph?
james watt
Who invented the long lasting filament electric light bulb?
Thomas Edison is credited with inventing the long-lasting filament electric light bulb in 1879. He developed a carbonized bamboo filament that could last for up to 1200 hours, making light bulbs practical for everyday use.
How did thomas Edison improve on the light bulb?
Thomas Edison improved the light bulb by creating a long-lasting and practical version using a carbonized bamboo filament, which could burn for over 1200 hours. He also developed a better vacuum pump to remove air from the bulb, resulting in a longer lifespan for the filament. Additionally, Edison worked on various materials for the filament, eventually settling on a carbonized cotton thread that further extended the light bulb's durability.
