alleryStart learning →The voltage measured across the output terminals of a source is called the:
AInternal voltage
BJunction voltage
CReference voltage
DTerminal voltage
Answer & Solution
Correct answer: D. Terminal voltage
1. A real source has more than one voltage worth naming.
2. All voltage sources have a source of electrical energy and an internal resistance.
3. Diagrams also show the output terminals of the source.
4. The terminal voltage is measured across those output terminals.
5. It falls below the emf when current flows through the internal resistance.
_Source: OpenStax College Physics for AP Courses 2e (CC BY 4.0), Ch 21 'Circuits and DC Instruments', sections 21.1-21.6_
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