potential difference
Pronunciation
Noun
B2 Upper-intermediate
Quick answer
The difference in electrical energy per unit charge between two points in a circuit, measured in volts.
Synonyms and antonyms
Synonyms
Usage notes
In everyday speech people just say "voltage," but "potential difference" is the more precise term used in physics classrooms.
Test yourself
Which word fits the gap? "A higher _____ across the bulb made it glow more brightly."
Answer: potential difference
In your own words, what does "potential difference" mean?
The difference in electrical energy per unit charge between two points in a circuit, measured in volts.
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