The most common place I can think of is in the HT (High Tension) leads leading to a car's spark plugs: https://en.wikipedia.org/wiki/High_tension_leads
German has this too: voltage = Spannung = tension.
This must go right back to the earliest writings on voltage as a concept.
A simmilar problem in spanish was "amperaje" (amperage) which is not much heard any more except very colloquially among electricians; the standard term is "corriente" (current).
However, the units and letters are somewhat confusing for the students:
V(oltage) = E(lectric field?), unit is Volt, is refered as tension of potential differece. A(mp) = I(ntensity), unit is Ampere, is refered as corriente. P(ower), unit Watt, is consistent, as is refered as potencia (power).