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| Veritasium "How Electricity Actually Works" |
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| electrodacus:
--- Quote from: IanB on May 20, 2022, 04:55:37 am ---Of course. That is why nobody has ever claimed that. On the contrary, work is energy stored, heat is energy lost. --- End quote --- You are very confused. Doing work means using energy not storing energy. Once you have done the work that energy to do the work is used so no longer available. As an example a vehicle using 1kWh to travel 5km is work done. That 1kWh is no longer available it was used to cover friction thus lost as heat. You either admit energy is stored in the capacitor or you can claim that some work was done. You can not claim both are true at the same time as that is not how this universe works. Getting those 72mJ in the capacitor was already very inefficient at just 50% with another 72mJ lost as heat. |
| hamster_nz:
--- Quote from: electrodacus on May 20, 2022, 06:32:18 am --- --- Quote from: IanB on May 20, 2022, 04:55:37 am ---Of course. That is why nobody has ever claimed that. On the contrary, work is energy stored, heat is energy lost. --- End quote --- You are very confused. Doing work means using energy not storing energy. Once you have done the work that energy to do the work is used so no longer available. As an example a vehicle using 1kWh to travel 5km is work done. That 1kWh is no longer available it was used to cover friction thus lost as heat. You either admit energy is stored in the capacitor or you can claim that some work was done. You can not claim both are true at the same time as that is not how this universe works. Getting those 72mJ in the capacitor was already very inefficient at just 50% with another 72mJ lost as heat. --- End quote --- Wikipedia disagrees... see "Work (physics)" |
| SandyCox:
--- Quote from: electrodacus on May 20, 2022, 06:32:18 am --- --- Quote from: IanB on May 20, 2022, 04:55:37 am ---Of course. That is why nobody has ever claimed that. On the contrary, work is energy stored, heat is energy lost. --- End quote --- You are very confused. --- End quote --- You appear to be surrounded by confused people. What's the common factor? It's you! |
| Alex Eisenhut:
--- Quote from: electrodacus on May 20, 2022, 06:32:18 am ---Doing work means using energy not storing energy. --- End quote --- That is correct. For example, moving charge from a battery (energy storage, yes?) to a capacitor. Now the energy is in the capacitor, that took work. Sort of like slogging through your obtuse ramblings. Does a capacitor store time? |
| electrodacus:
--- Quote from: Alex Eisenhut on May 20, 2022, 12:39:45 pm --- That is correct. For example, moving charge from a battery (energy storage, yes?) to a capacitor. Now the energy is in the capacitor, that took work. Sort of like slogging through your obtuse ramblings. Does a capacitor store time? --- End quote --- The work that was done to move that charge from the voltage source to capacitor resulted in 72mJ of heat on the wires. So efficiency of moving electrical energy from the ideal voltage source to capacitor was 50% Thus you end up with 72mJ of heat due to work you performed to move the charge and 72mJ of electrical energy stored in to capacitor. The 72mJ stored in the capacitor did not do any work but they are there to do whatever work you want. |
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