Monolingual examples (not verified by PONS Editors)

English
A real battery can be modeled as an ideal battery with a specified EMF, in series with an internal resistance.
en.wikipedia.org
The internal resistance of an ideal voltage source is zero; it is able to supply or absorb any amount of current.
en.wikipedia.org
The back emf of the motor, plus the voltage drop across the winding internal resistance and brushes, must equal the voltage at the brushes.
en.wikipedia.org

Choose your language Deutsch | English | Español | Français | Italiano | Polski