0
What else can I help you with?
A light bulb wastes about 85 percent of its energy how efficient is it?
If a light bulb wastes about 85% of its energy, then it is approximately 15% efficient. This means that only 15% of the energy it consumes is actually converted into light, while the remaining 85% is lost as heat.
Why would a cell connected to two bulbs that are connected in series last longer than if the same two bulbs are connected in parallel?
This question looks like one that has been asked by a high-school teacher with very little knowledge of electrical science, and who doesn't realise that the resistance of a lamp changes appreciable between when it is cold and when it is hot! (Either that, or he is being devious!)So, as stated, this question is not straightforward, because incandescent lamps that operate at their rated voltage and power have a 'hot' resistance that is around 15 - 20 times their resistance when cold. Lamps in series are not subject to their rated voltage and, so, their resistance will be relatively low in comparison. So, what the question comes down to is whether the combined (high) resistance of lamps in parallel (i.e. half the resistance of one of the lamps) higher or lower than the combined resistance (low) of the same lamps connected in series (twice that of one of the lamps)? You could find this out experimentally, but I'd be inclined to believe that the two lamps connected in parallel are more likely to have the higher resistance and, therefore, the cell supplying them would last longer -in other words, opposite to that in your question!Now, if you simply used two resistors (whose resistance doesn't change appreciably with temperature) then the two connected in series would definitely have a higher resistance (twice) than if they were connected in parallel (half), and they would draw less current and the cell would last longer.
In the picture below if pulley A turns clockwise at 15 rpm how fast and in what direction will pulley B turn?
Pulley B will turn counterclockwise at 15 rpm since it is connected to pulley A by the belt. Both pulleys will turn at the same speed since they are connected by the belt.
How much electricity would it take to make a light build explode?
A normal light bulb can take up to 20-30 kilowatts so it all depends on what type of light bulb. My light bulb can take 15 kilowatts max and will blow out in an hour straight. So if your using some different type of light bulb like an Eco friendly one, look at the package to see for details or talk to your local electrician.
How did Thomas Edison make the first light bulb?
he woked on it for 15 years. He first made a airless glass that has the shape of a sphere and then he put in a filament (string that powers the light bulb) which was made out of carbon and powered the lightbulb through electricity
What will happen if a 20K bulb is connected to a 1200AH battery?
The bulb will burn for 15 minutes.
How would you identify a defective light bulb if 15 bulbs are connected in parallel?
it will be the one that is dark
What is the wet bulb depression if the dry bulb is 20 and the wet bulb is 17?
15
What is A-15 60 watt bulb?
an A15 bulb is a standard (medium) base screw-type bulb with a smaller envelope designed for appliances and some ceiling fans. They are almost always the size found in refrigerators.
A 15 volt battery is connected to 4 lights of the same resistance in a series circuit How many volts of electricity run across each light?
There is a 3.75 Volt drop across each bulb.
How do you change the license plate bulb on a Toyota matrix?
Open the hatch door. Right behind the license on the inside of the door is a cover that you take off using a thin blade. This exposes the back of the bulb holder and the wire connected to it. Remove the wire by pulling on the connector that fits into the back of the bulb holder. The back of the bulb holder then needs a quarter turn counter clockwise. The best tool to use to turn the bulb holder is a 15 mm socket on an extension long enough to reach the bulb holder inside the hatch. Once you have removed the bulb holder, you can simply pull the bulb straight out of the front of the bulb holder. Replace the bulb with a #168 bulb.
What is the wattage for zero bulb?
15 watts
Which 12 volt bulb will draw the most current when connected to a 12 volt battery?
The bulb with the lowest resistance. Current = Volts / Resistance
What is the total resistance of 15 ohms?
That depends how they are connected. For example, if they are connected in series, just add the individual resistances.
What are the release dates for California Connected - 2002 4-15?
California Connected - 2002 4-15 was released on: USA: 2005
How hot is a 15 watt light bulb?
120
How many volts do you need to light up a 15 watts light bulb?
15.
