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Light bulbs have always used watts.

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Q: When did light bulbs start using watts?
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What wattages do fluorescent light bulbs come in?

3 watts to 125 watts.


What is The electrical power used by light bulbs measured in?

Electrical power is measured in watts (W), just like any other type of power.Power is the rate at which energy is used. Energy is measured in joules (J), though utility bills usually measure energy using kilowatt-hours (kW·h) instead. 1 kW·h = 3,600,000 J.


What are the most efficient light bulbs?

At present there are several types of light bulbs available for indoor domestic use.Arranged by their efficiency from least-to-most they are:Incandescent bulbs (60 watts)The old style light bulb emitting light from a hot filamentFluorescent tubes (30 to 40 watts)Several inch to several foot long tubes emitting light from a vacuum with a trace of Mercury vapour requiring a special fixtureCompact Fluorescent bulbs (15 watts)Roughly incandescent sized small fluorescent tubes designed to screw into standard light bulb fixturesLight Emitting Diode /LED's (5 watts)Small cool running lights using special mini-sockets or designed to fit into conventional sockets.Notes:Power requirements to provide as much light as a 60 watt incandescent bulb indicated in parenthesesBoth types of fluorescent tubes contain mercury and require special handling and disposal requirementsOutdoor lights would also include Mercury and Sodium vapour bulbs as well as high powered incandescent bulbs. These are more efficient than incandescent bulbs but the colour spectrum emitted and other aspects makes indoor use unlikely


How many 50 watt light bulbs equal 1 megawatt?

This depends on the wattage of each bulb. If each bulb is, say, 100 watts, you can power ten thousand bulbs. To calculate for your own bulbs, divide 1,000,000 watts by the wattage of each bulb.


How many light bulbs does it take to make a computer screen?

no there is not thousands of light bulbs on a computer screen. Instead there is a projector built in the computer projecting whatever for example google and then it appears on your screen. It is very clever i think personally

Related questions

What do you measure in light bulbs?

Light bulbs are measured in two ways: Lumens for their light output and Watts for their power consumption.


How are light bulbs muasursd in?

Watts.


What is the total wattage of 3-20 w light bulbs?

The total wattage of three 20-watt light bulbs is 60 watts.


What are the disadvantages of LED light bulbs?

Not as bright as normal light bulbs (higher watts though)


What is the wattage of a light fixture with 3 60 watt bulbs?

The total wattage of the light fixture with 3 60-watt bulbs is 180 watts (3 bulbs x 60 watts per bulb).


What wattages do fluorescent light bulbs come in?

3 watts to 125 watts.


The power of a light bulb is measuerd in?

Light bulbs are rated in watts


What is the eletrical unit for measurements of light bulbs?

watts


The eletrcial of light bulbs are measured in what unit?

Watts


Electrical power of light bulbs is measured in what?

Watts.


How watts is a bright light bulb?

A bright light bulb typically uses around 60-100 watts of power. LED bulbs are more energy-efficient and can provide the same brightness using as little as 10-20 watts.


The electfical power of light bulbs is measuured in what unit?

watts