Physics › Section O · Current and circuits › Topic O.7
Kirchhoff's rules
Some circuits cannot be untangled into series and parallel pieces, especially when they contain more than one source. Kirchhoff's two rules, built on conservation of charge and of energy, solve any of them.
In this topic
- When series and parallel are not enough
- The junction rule
- The loop rule
- Sign conventions
- A method that always works
- Worked example: two batteries in one loop
- Worked example: a two-loop circuit
- Interpreting and checking the answer
- Common mistakes to avoid
- Key takeaways
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