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100 Watts is 100 Joule/second. If you want the answer in Joule, you can base your calculations on that.
On the other hand, the electrical company will charge you by the kWh. In this case, it is more convenient to calculate as follows: 100W = 0.1 kW, that is the same as 0.1 kWh/hour.
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∙ 13y ago
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Does a 100w lamp use more energy than two 60w lamps?
NO. Two 60W lamps will use 120W - which is more than 100W !!
Plug a lamp into an electrical socket and you turn electrical energy into this form of energy?
-- None at all if the lamp is switched off.-- If the lamp is switched on, then electrical energy is turned into a little bit ofvisible light energy and a comparatively larger quantity of heat energy.
What changes Electrical Energy to light energy?
a lamp
How much electrical energy does a 100W lamp use in 1 second?
Watts measure power. Energy is measured in joules and is the product of power and time. 1 joule = 1 watt for 1 sec Energy used in the example = 100 x 1 = 100 joules
What energy transformation's in a lamp?
Electrical energy is transformed into electromagnetic energy.
What are two common energy conversions involving electrical energy?
Electrical energy to sound energy with an alarm clock Electrical energy to light energy with a lamp
What two common energy conversions involve electrical energy?
Electrical energy to sound energy with an alarm clock Electrical energy to light energy with a lamp
What is an example of electrical energy changing into heat energy?
Turning on a lamp
A lamp turns into what kind of energy?
A typical lamp would convert electrical energy into light energy. And lots of heat too.
What is the energy converted into heat and light in a lamp?
Primarily electrical energy. some chemical, from the coating on the inner side of the lamp
How much electrical energy is produced by a light bulb with the power ratings of 60w?
A lamp doesn't produce electrical energy; it utilises it. The power-rating of the lamp will tell you the rate at which that lamp uses expends energy at its rated voltage. For example, a 60-W lamp will expend energy at 60 joules per second.
What energy use in lamp?
Many lamps use electrical energy, but some lamps use chemical energy, for example a kerosene lamp or a candle.
