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I would have to guess, 100 watts. Power consumed is equal to P I E. P = Amps (I) X Volts (E). Power is measured in watts, or typically, as read on your energy bill, Kilowatts (kw, where 1 Kw = 1,000 watts). So, 100 watts/120V (which is the typical American system) = 0.833 amp (I). Your typical power meter, by which the power company reads your monthly bill, measures amps. Also, 100 watts is 1/10 Kw, or 0.10 kw/hour
Answer
First of all, you do NOT consume power; you consume energy. Energy is measured in joules, so power is measured in joules per second, which is given a special name: the watt.
So there is no such things as 'watts per hour', as this would mean 'joules per second per hour' which, obviously, is nonsense!
So, your question should ask, "How much energy is consumed by a 100-W lamp in one hour?" Well, if one watt represents one joule per second, then the lamp will consume 100 x 60 joules in one minute and, therefore, 100 x 60 x 60 joules in one hour. That is, 360 000 joules.
Electricity companies usually measure energy in kilowatt hours, rather than in joules. A kilowatt hour is defined as "the energy consumed, in one hour, at a rate of one kilowatt'. You can think of a kilowatt hour simply as being a very big joule! Since 100 W is 0.1 kW, we can therefore say that the lamp must consume 0.1 x 1 = 0.1 kilowatt hours during a period of one hour.
A 100 watt light bulb emits 100 joules of energy per second (since watts are a measure of energy per unit of time). Therefore, in one minute, the light bulb will emit 6,000 joules of energy (100 joules/second x 60 seconds).
Answer
Appliances, such as your lamp, don't 'consume' power; they consume energy. Their power rating merely tells you the rate at which they consume energy. '100 watts' means that your lamp consumes 100 joules of energy every second it is operating.
So, over a period of one hour, your lamp will consume 100 x (60 x 60) = 360 000 joules of energy.
To complicate matters, however, electricity companies usually measure the energy their customers consume in kilowatt hours, rather than joules (a kilowatt hour is equivalent to 3.6 million joules -in other words, it's a 'big' joule!). A kilowatt hour is the amount of energy consumed, over a period of one hour, at a rate of 1000 watts.
To calculate how much energy, in kilowatt hours, your lamp consumes, you must multiply its power in kilowatts (i.e 100/1000) by the number of hours it operates (1), so your lamp consumes 0.1 kilowatt hour. If you know how much your utility company charges, per kilowatt hour, then you can figure out the cost of running your lamp.
To answer this question you need to state what your utility company charges you per kWh. It should be stated on your monthly electric bill. When you find this value multiply it by .100 which is how many kilowatts a 100 watt light bulb is equal to.
A 100 watt bulb uses 100 watt-hours in one hour. In standard energy units, that is 0.1 kilowatt-hours.
The energy is 100 watts times 60 seconds: 6000 watt-seconds, also called Joules. Most of the energy is emitted as heat.
100 watts running for 60 seconds uses 100 x 60 Joules of energy. A Joule is the same as a watt-second.
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What is the starting and finishing energy of a light bulb?
The starting energy of a light bulb is zero, where it is not emitting any light. The finishing energy of a light bulb is the energy consumed while it is in use to emit light.
What type of energy does a flashlight give off?
A flashlight gives off light energy, which is a form of electromagnetic radiation. The light energy is created when the flashlight's batteries produce electrical energy that powers the light bulb or LED to emit light.
What energy changes take place when a light switch is turned on?
mechanical to electrical to light energy
Is light in an incandescent bulb matter?
Yes, light in an incandescent bulb is a form of electromagnetic radiation, not matter. The light is produced by the heating of a tungsten filament in the bulb, causing it to emit visible light.
If you were to turn on a bulb in a dark closet. Light and heat would be produced. if thinking on conservation of energy why do the walls or floor not emit light when the bulb is off?
The walls and floor do not emit light when the bulb is off because they do not have a mechanism to produce light energy like the bulb does. The bulbs are specifically designed to convert electrical energy into light and heat, while the walls and floor do not have the same capability.
What does a light bulb transfer?
A light bulb transfers electrical energy into light and heat energy when it is turned on. The electrical energy is converted into photons, which emit light when passing through the bulb's filament.
What is the starting and finishing energy of a light bulb?
The starting energy of a light bulb is zero, where it is not emitting any light. The finishing energy of a light bulb is the energy consumed while it is in use to emit light.
How is energy transferred to a light bulb?
Energy is transferred to a light bulb when an electric current flows through a filament in the bulb, heating it up and causing it to emit light. The electrical energy is converted into light and heat energy by the filament, which produces the visible light that we see.
Why do you need electricity to light a light bulb?
Electricity is needed to light a light bulb because the flow of electrons through the filament inside the bulb generates heat and light energy. This energy causes the filament to emit light, thus illuminating the bulb. Without electricity, there is no source of energy to power the light bulb.
What type of energy transformation occurs when a light bulb is on?
Electrical energy is transferred into light energy, however if the light bulb is an older one, some energy will also be transferred into heat loss.
Which type of energy conversion takes place when a light bulb is turned on?
Electrical energy is converted into light energy and heat energy when a light bulb is turned on. The electrical energy flows through the bulb's filament, causing it to heat up and emit light.
What energy is when you turn off a light switch?
Turning off a light switch stops the flow of electricity to the light bulb, which cuts off the energy supply needed for the light bulb to emit light. The energy that was being used to power the light bulb is no longer being converted into light energy.
How is energy transfered in a simple system?
In a simple system, such as a light bulb connected to a battery, energy is transferred through electrical currents. When the battery is connected to the light bulb, it provides the energy needed for the bulb to emit light. This energy transfer occurs as the electrons flow through the wire from the battery to the light bulb.
When a light bulb is lit electrical energy is changed into light energy and what happens?
When a light bulb is lit, electrical energy is converted into light energy and heat energy. The electricity flows through the filament of the bulb, causing it to glow and emit light while also generating heat due to resistance in the filament.
What two energy changes happen in a light bulb?
In a light bulb, electrical energy is converted into radiant energy (light) and thermal energy (heat). When the bulb is turned on, the electrical energy flowing through the filament heats it up, causing it to emit light while also generating heat as a byproduct.
What is the difference between a LED light bulb and a regular?
a regular light bulb emits about 80% heat energy and only 20% light energy, whereas leds emit about 70 % light and 30% heat
What is the energy conversion of a lamp?
A lamp converts electrical energy into light energy through the use of a light bulb or LED. The electrical energy powers the light source, causing it to emit light.
