I like watching science videos on YouTube and I have a very basic understanding of electronics. But I never seem to get the “negative voltage” thing.
Why is it used and how does it differ from normal voltage.
In: 5
Voltage is always measured as a difference and is like pressure. It’s not something that measures an amount of stuff like mass or volume. A voltmeter’s displayed voltage measurement is the red probe minus the black probe. If you do that and it says +10 volts, swapping the two probes will make it read -10 volts.
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