Physics A-Level
Junction and loop rules
What Junction and loop rules means in Physics A-Level, as defined for OCR.
Definition of Junction and loop rules
Check what you remember
Read the wording for your board, then hide it and explain Junction and loop rules in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: OCR
Kirchhoff's first law concerns currents at a junction, and his second law concerns voltages around a closed loop.
Topics that use Junction and loop rules
- Series and parallel circuits (OCR A-Level)
Related terms
- Circuit analysis
- Conservation of charge
- Conservation of energy
- Conservation of energy in electrical circuits
- Kirchhoff's laws
- Ohm’s law
- Series and parallel combinations
- Sign conventions in loop analysis
Using Junction and loop rules in the exam
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