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An electrical watt is a measure of power. A 40 watt light bulb uses 40 watts of electrical power. It has a relative measure of twice the light output of a 20 watt bulb and one half the output of an 80 watt bulb.

A 40 watt bulb uses 40 Joules of energy each second, or 40 watt-hours of energy each hour. In 1000 hours it uses 40 kilowatt-hours or Units of electrical energy.

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โˆ™ 2014-08-21 11:00:48
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Q: What does 40 watts bulb mean?
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Related questions

What does 40W mean on a light bulb?

It means that the power consumption of the bulb is 40 watts.

How many watts are in a security light with a 40 watt bulb?

If it is a 40 Watt bulb it converts energy at the rate of 40 Watts as long as it is switched on.

What is the different between a 100 watt bulb and a 60 watt bulb?

40 watts.

What wattage bulb does a lava lamp use?

the bulb is usually 30 or 40 watts

How much watts does a lamp use?

It depends on the bulb. A 25 watt bulb uses 25 watts, a 40 watt uses 40 watts, a 60 watt bulb uses 60 watts, a 75 watt bulb uses 75 watts, a 100 watt bulb uses 100 watts, all the way up to a 500 watt bulb. Incandescent bulbs are about to cease to exist, so this answer is only good through the fall.

Connected in parallel which bulb will glow brighter A 40 watt bulb or a 100 watt bulb?

100 watts

Is a 40 watt bulb the same as 580 lumens?

40 watts means that it uses 40 watts of electrical power. Lumens measure the amount of light produced. An incandescent bulb produces around 10 lumens per watt.

What does it mean by writing V and W in a bulb?

V on a light bulb means volts. W means watts.

How much wind power to light a bulb?

A 40-watt bulb requires 40 watts of power. It can come from any kind of electric generator.

What is the difference between a 40 watt bulb and a 100 watt bulb?

60 watts. This means that the 40 watt bulb uses less electricity but it also produces less light.

How many units a 40 watts bulb consume in 1 hour?

1 unit

How many kilo watts does a 40 watt bulb use in 1 hour?

0.04 kilowatts one kilowatt is 1000 watts

What is the resistance of a 40 watt bulb?

On this calculation I am assuming that the light bulb is using a 120 volt source. Watts = Amps x Volts. Amps = Watts/Volts, 40/120 = .33 amps. R = Volts/Amps, 120/.33 = 363.6 ohms resistance in the 40 watt light bulb.

Can you put a 7 watt bulb in a 40 watt socket?

Yes if it fits. The 40 watts would be an upper limit.

How many watts is light bulb 120 VAC 60Hz 300mA?

Multiply the current by the voltage: 120 times 0.3, which is 40 watts.

Which bulb will consume higher electricity 240 volts bulb or 0 watts bulb?

0 watts

What is the energy used in one second when a bulb have 40Watts.?

40 Joules, I think, as the formula for Watts is Joules/Second = Joules per second 40 Watts should equal 40 Joules per one second...

How many watts is a 1141 auto bulb?

An 1141 bulb consumes 18.4 watts.

How many watts in a light bulb?

a normal light bulb is about sixty watts. if the light bulb is being fed a certain amount of bolts the watts can increase.

What is the power of light bulb measured in?

watts Watts

Can I use a higher wattage bulb in a lamp that states 40 watts?

You should not use a higher wattage bulb in a lamp that says 40 watts. The higher wattage could cause the lamp to catch fire due to the excess heat and could cause you serious electrical problems.

What does it mean when 100 watts is written on an electric bulb?

It is the rated load that is applied to the circuit that the bulb is in. In laymen's terms, it is bulb brightness. The higher the wattage the brighter the bulb will glow.

Does a compact fluorescent lamp use 60 watts the same as a standard lamp?

40 watts is 40 watts, that is what you are paying for. However, an incandescent bulb uses the 40 watts to make light and heat. The compact bulbs make more light and less heat for the same wattage. To actually save, choose a lower wattage that will give acceptable light levels.

A low amps power source is converted into volts and powers a 60 watt light bulb what is left?

40 watts

Is Watts light bulb OK for weed plant?

Can I use 50 watts light bulb for weed plant