photoelectric current: meaning, definition, pronunciation and examples
C2Technical/Scientific
Quick answer
What does “photoelectric current” mean?
The electric current produced when light strikes a photosensitive material, causing electrons to be emitted.
Audio
Pronunciation
Definition
Meaning and Definition
The electric current produced when light strikes a photosensitive material, causing electrons to be emitted.
In broader technical contexts, it can refer to any measurable flow of electrons or charge carriers initiated by photon absorption in a material, including phenomena like photovoltaic or photoconductive currents.
Dialectal Variation
British vs American Usage
Differences
No significant lexical or orthographic differences exist; it is a standardized technical term. Spelling follows regional conventions for 'current' within other text.
Connotations
None; purely denotative.
Frequency
Equally rare and technical in both variants.
Grammar
How to Use “photoelectric current” in a Sentence
The [light source] generates a photoelectric current in [the material].A photoelectric current flows when [condition].Vocabulary
Collocations
Examples
Examples of “photoelectric current” in a Sentence
adjective
British English
- The photoelectric current measurement was crucial.
American English
- The photoelectric current measurement was crucial.
Usage
Meaning in Context
Business
Virtually never used.
Academic
Used in physics, materials science, and engineering papers and textbooks describing the photoelectric effect or photovoltaic devices.
Everyday
Not used.
Technical
The primary context. Used in lab reports, technical manuals for sensors, and research into solar cells or photodetectors.
Vocabulary
Synonyms of “photoelectric current”
Neutral
Weak
Vocabulary
Antonyms of “photoelectric current”
Watch out
Common Mistakes When Using “photoelectric current”
- Using 'photoelectric current' to describe the device itself (e.g., 'I bought a photoelectric current' is wrong; it's a 'photoelectric cell' or 'photodetector').
- Confusing it with 'electric current' in general, omitting the light-initiated cause.
FAQ
Frequently Asked Questions
In many technical contexts, yes, 'photocurrent' is a common shorthand. However, 'photocurrent' can sometimes have a broader meaning, encompassing currents from photovoltaic or photoconductive effects, not just photoemission.
Yes, classic demonstrations of the photoelectric effect often occur in a vacuum tube, where emitted electrons (the photoelectric current) flow across the vacuum to an anode.
No, it can be initiated by any electromagnetic radiation with sufficient photon energy (frequency) to eject electrons from the specific material, including ultraviolet light.
It is fundamental to light-sensing devices like photomultiplier tubes, certain types of photodiodes, and historically, it explained the physics behind early light meters and the basis of solar energy conversion.
The electric current produced when light strikes a photosensitive material, causing electrons to be emitted.
Photoelectric current is usually technical/scientific in register.
Photoelectric current: in British English it is pronounced /ˌfəʊtəʊɪˈlɛktrɪk ˈkʌrənt/, and in American English it is pronounced /ˌfoʊtoʊɪˈlɛktrɪk ˈkɜːrənt/. Tap the audio buttons above to hear it.
Learning
Memory Aids
Mnemonic
Think: PHOTO (light) + ELECTRIC (flow of electrons) + CURRENT (flow) = the flow of electrons started by light.
Conceptual Metaphor
Light as a trigger or a key that unlocks a flow of electrons.
Practice
Quiz
What primarily determines the magnitude of a photoelectric current?