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1 watt = 1 Joule/sec

60 watts x 900 sec = 54 000 Joule

100 watts x 500 sec = 50 000 Joule

So you use less electrical energy using 100 watt light bulb for 500 seconds.

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The burning of coal or natural gas in an electrical generation plant would follow those steps. Starting as a hydrocarbon with lots of potential energy, it would be burned to heat water, which would then boil and create stream would would in turn drive a turbine attached to an electrical generator.


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A joule is a joule, whether it be electrical energy or light energy - although commonly, lamps are not 100% efficient.On the other hand, you can't convert joules directly to watts. Watts means joules per second (joules / second), or equivalently, joules is watts times seconds.A joule is a joule, whether it be electrical energy or light energy - although commonly, lamps are not 100% efficient.On the other hand, you can't convert joules directly to watts. Watts means joules per second (joules / second), or equivalently, joules is watts times seconds.A joule is a joule, whether it be electrical energy or light energy - although commonly, lamps are not 100% efficient.On the other hand, you can't convert joules directly to watts. Watts means joules per second (joules / second), or equivalently, joules is watts times seconds.A joule is a joule, whether it be electrical energy or light energy - although commonly, lamps are not 100% efficient.On the other hand, you can't convert joules directly to watts. Watts means joules per second (joules / second), or equivalently, joules is watts times seconds.


How much energy does a 100-w light bulb use in 10 s?

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Chemical energy from the battery is changed into electrical energyThis electrical energy is then changed to which type of energy?

The electrical energy from the battery can be converted into various forms of energy depending on the device or system it powers. In an electronic device, it may be converted into light (in a flashlight), thermal energy (in a heating appliance), or mechanical energy (in a motor or fan), among others.

Related Questions

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What type of energy are you using when you turn on a car?

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