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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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Q: What does 40 watts bulb mean?

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

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

40 watts.

the bulb is usually 30 or 40 watts

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.

100 watts

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.

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

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

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

1 unit

0.04 kilowatts one kilowatt is 1000 watts

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.

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

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

0 watts

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

An 1141 bulb consumes 18.4 watts.

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

watts 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.

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.

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.

40 watts

Can I use 50 watts light bulb for weed plant