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Voltage is the unit of measurement for electronic potential, from one point location to another.

9 votes
4 answers
2k views

Why is it convenient to define zero electric potential at infinity?

I get that electric potential is defined at infinity for convenience but why is it convenient? What would be an inconvenient place to define zero electric potential?
Jabeaumes's user avatar
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8 votes
5 answers
3k views

Why does a drop in resistance lead to a drop in voltage?

I get that resistance is due to collisions on the atomic scale where the electrons' kinetic energy is transferred to the metal lattice and that a lower resistance means a low voltage because less energy … So since $V=IR$, surely the voltage would remain the same because, yes the resistance is smaller but, the current is bigger? …
Jabeaumes's user avatar
  • 523