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The definition of a Watt is 1 Joule/second. Therefore:
150W * 60 Sec = 9000 Joules / minute.
In units more applicable home energy use, 9000 Joules/minute equals .0025 Kilowatt Hours (KWh)/minute.
On a cost basis, if for example, electricity from a power company costs $.20 per KWh, the 150W light bulb costs 3 cents per hour to use.
Wiki User
∙ 14y ago
Wiki User
∙ 6y agoOne watt means 1 joule/second. Therefore, 1 joule = 1 watt x 1 second.You need to do the following:* Convert the minutes to seconds.
* Multiply the power (watts) by the time in seconds, to get joules.
* Convert that to kJ.
Wiki User
∙ 15y agoa 75 watt lightbulb would use 0.3125 (75/240) watt hours, or 0.0003125 kwh, of power in 15 seconds.
Wiki User
∙ 6y agoEnergy(j)=power(w)*time(sec); 112.5kj
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What does 40 watts bulb mean?
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.
Compare and contrast a 60 watt and 100 watt light bulb?
The more energy that is transferred in a certain time, the greater the power. A 100W light bulb transfers more electrical energy each second than a 60W light bulb.The equation below shows the relationship between power, potential difference (voltage) and current:power (watts) = current (amps) x potential difference (volts)
If a lamp bulb is rated at 100 watt why is a time factor not in the rating?
The unit watt is defined as energy per unit time. Thus a 100W light bulb consumes 100J of energy each second. Joules are a unit of energy. Watts are a unit of power.
How much energy does a sixty watt light bulb use to yield light?
It takes 60 watt-hours. Same as lighting a 1-watt bulb for 60 hours; or 60 bulbs of 1 watt each for 1 hour. You get the idea.Notice the units: watt-hours, not watts. Watt is a unit of power, watt-hour is a unit of energy. 1 watt-hour = 0.001 kWh (kilowatt-hour) = 3600 joules = 860 calories = 3.4 BTU.
Is the total bulb wattage for all three bulbs or each bulb when the sign says use type c lamp 60 watts bulb max?
The label 60 watts bulb max is referring to each individual bulb, not the total in the light fixture.
When 60 W means that W joules of energy are transferred into the bulb each second. In use how much energy is given out by the bulb each second?
The light bulb will use electrical energy at the rate of 60 W (60 J/s), and it will emit that energy, also at the rate of 60 W.Note that in any real light bulb, only part of the energy is emitted as visible light. The remainder is mainly heat.
What happen to an electric current after it passes through each bulb?
There is a piece of filament in every light bulb, which has so much friction that when the electric current passes through it, heat energy is produced. This heat energy is then converted to light energy.
How much energy do you save with 10 light bulbs off?
That depends on the power used by each light bulb. Look at the specifications for a specific light bulb, then multiply the power by 10. Note that energy = power x time; that is to say, the energy spent by a light bulb depends on its power, but also on how long you keep it on. Specifically, watts = joules x seconds.
What does 40 watts bulb mean?
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.
Compare and contrast a 60 watt and 100 watt light bulb?
The more energy that is transferred in a certain time, the greater the power. A 100W light bulb transfers more electrical energy each second than a 60W light bulb.The equation below shows the relationship between power, potential difference (voltage) and current:power (watts) = current (amps) x potential difference (volts)
If a light bulb is connected between 2 wires and both wires have 300 volts of electrical energy is the light bulb lit?
A light bulb connected between to wires, each having 300 volts to ground that are in phase, will not light, because there is no differential voltage available to do any work. If each wire has 300 volts to ground and are out of phase (600 volts between them) the light bulb will be lit, if it is rated at least for 600 volts, otherwise it will burn out.
Explain the difference between energy efficiency and energy conservation Give an example of each?
Efficiency is a measure of how completely you use energy, whereas conservation is a measure of how little energy is used. For example: A typical light bulb turns 2% of the power input into light, therefore it is 2% efficient. Not turning the light bulb on in the first place uses no power, and therefore conserves electricity.
If a lamp bulb is rated at 100 watt why is a time factor not in the rating?
The unit watt is defined as energy per unit time. Thus a 100W light bulb consumes 100J of energy each second. Joules are a unit of energy. Watts are a unit of power.
How much energy does a sixty watt light bulb use to yield light?
It takes 60 watt-hours. Same as lighting a 1-watt bulb for 60 hours; or 60 bulbs of 1 watt each for 1 hour. You get the idea.Notice the units: watt-hours, not watts. Watt is a unit of power, watt-hour is a unit of energy. 1 watt-hour = 0.001 kWh (kilowatt-hour) = 3600 joules = 860 calories = 3.4 BTU.
Would parallell circuit be more economical than series circuit?
Not really. The energy requirement of each light-bulb (or whatever you want to drive) wouldn't change, and you can't get energy out of nothing.
How many chimps does it take to screw in a light bulb?
3 one to screw the light bulb in and 2 to throw poo at each other
Can a solar flashlight be recharged with a light bulb?
Yes, although it will take a lot longer than in sunlight. The particles of light are called photons and each photon carries a certain amount of energy. As the photon hits the photovoltaic cells of the solar panel, the energy they contain is converted into electrical energy by the excitation of electrons in the board. The stronger the light, the more energy.
