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Q. Will a DC motor really produce voltage if it is spun in reverse?
Answer:-
It will produce voltage if you spin it forwards too. The merely difference between a DC motor and a DC generator is what you utilize it for. A long time previously cars had DC generators on them instead of AC alternators. When you change a generator you had to "polarize" it consequently it would make electricity. You enthusiastic it up to your battery and let it run as a motor for a few seconds. Do not try that with an alternator for the reason that you'll break it. If you're seem to be for a neat little elementary-school science project you can use little Radio Shack electric motors as generators for things like water wheels, windmills, dynamos turned by bicycle tires.
Two moles of an ideal gas expands reversibly and isothermally to ten times its volume at 25°C. Evaluate the change in entropy during the process. ( R = 8.314 JK -1 mol -1 )
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