How much energy does a 100 watt light bulb emit in one minute?

Answer 1

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.

Answer 2

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 3

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.

Answer 4

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.

Answer 5

A 100 watt bulb uses 100 watt-hours in one hour. In standard energy units, that is 0.1 kilowatt-hours.

Answer 6

The energy is 100 watts times 60 seconds: 6000 watt-seconds, also called Joules. Most of the energy is emitted as heat.

Answer 7

100 watts running for 60 seconds uses 100 x 60 Joules of energy. A Joule is the same as a watt-second.

Answer 8

100