Physics A-Level
Internal resistance
What Internal resistance means in Physics A-Level, as defined for OCR.
Definition of Internal resistance
Check what you remember
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Reference: OCR
The resistance to current flow within the source itself, which causes a potential drop when current flows.
Topics that use Internal resistance
- 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
- Electromotive force
Using Internal resistance in the exam
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