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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
