AP Physics C: Electricity and Magnetism / Unit 11: Electric Circuits
11.6 Kirchhoff's Loop Rule
Notes
Around a closed loop, $\displaystyle \sum\Delta V=0$. Use it with the junction rule to solve multi-loop circuits.
Practice
Going across a resistor in the direction of current, the potential:
Energy is used.
Going from − to + through a battery, the potential:
Battery adds energy.
The loop rule expresses conservation of:
Per unit charge.
Ready for more? Take the Unit 11 test.