Timeline for Why is it not possible to measure voltage between one battery pole and ground?
Current License: CC BY-SA 4.0
15 events
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| Sep 23, 2021 at 12:59 | history | edited | JRE | CC BY-SA 4.0 |
added 4 characters in body; edited title
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| Jul 5, 2017 at 15:34 | history | edited | Voltage Spike♦ | CC BY-SA 3.0 |
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| Jul 4, 2017 at 20:20 | vote | accept | Alon | ||
| Jul 3, 2017 at 20:26 | answer | added | wbeaty | timeline score: 3 | |
| Jul 3, 2017 at 20:07 | comment | added | jonk | @JoschKraus Yes, the multimeter will show the potential difference between the two points of contact if there is an electromotive force between those points of contact. However, it is incorrect to mentally hold that there is a "zero potential" or a "positive potential" that is independently true on some absolute frame of reference. You might just as well shift your mindset and consider mentally to set the previously "positive potential" terminal as the new "zero potential" resulting in the prior "zero potential" terminal now becoming the new "negative potential." It's all relative. | |
| Jul 3, 2017 at 20:05 | review | Close votes | |||
| Jul 5, 2017 at 15:34 | |||||
| Jul 3, 2017 at 19:59 | comment | added | jonk | Note: Masse is used for "ground" in the field of electronics in Germany. Bezugsmasse translates as "reference/ground" and Gerätemasse translates as "device ground." So it's easy to see the usage of 'masse' as it applies in electronics. The OP did his preparatory work, except that he probably didn't realize how it sounds to an English-only speaker to add "mass" in the question. | |
| Jul 3, 2017 at 19:18 | answer | added | Transistor | timeline score: 3 | |
| Jul 3, 2017 at 19:14 | comment | added | JRE | Voltmeters must draw a tiny bit of current to work. At the voltages used, you can't get enough current through a sheet of rubber (or the air.). An electrometer can show voltage differences with out a current flow. | |
| Jul 3, 2017 at 19:12 | comment | added | JRE | The German word "Masse" doesn't translate to "mass" in English. | |
| Jul 3, 2017 at 19:11 | comment | added | Alon | Then replace my reference to ground by some zero potential... maybe a piece of rubber or anything | |
| Jul 3, 2017 at 19:11 | comment | added | Tom Carpenter | See this question, plus the many others it links to. | |
| Jul 3, 2017 at 19:05 | comment | added | Tom Carpenter | Ground is not "the ground". Ground is a reference point in the circuit. | |
| Jul 3, 2017 at 19:04 | review | First posts | |||
| Jul 3, 2017 at 19:47 | |||||
| Jul 3, 2017 at 19:02 | history | asked | Alon | CC BY-SA 3.0 |