Physics A-Level
Electromotive force
What Electromotive force means in Physics A-Level, as defined for OCR.
Definition of Electromotive force
Check what you remember
Read the wording for your board, then hide it and explain Electromotive force in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: OCR
The energy transferred per unit charge by the source.
Topics that use Electromotive force
- Internal resistance (OCR A-Level)
Related terms
- Electromotive force and internal resistance
- Energy transfer per unit charge in a source
- Lost volts
- Terminal potential difference
- Terminal potential difference and lost volts
- Circuit equations and algebraic rearrangement
- Internal resistance
Using Electromotive force in the exam
Check the command word and mark scheme for your exact question. After comparing your explanation with the reference, use the term in an answer on the linked topic. This practice does not predict an exam mark.
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