AP Physics C: Electricity and Magnetism / Unit 11: Electric Circuits
11.5 Compound Direct Current Circuits
Notes
Reduce series and parallel combinations step by step to find $R_{eq}$, then work back to find each current and voltage.
Practice
2 Ω in series with (6 Ω ∥ 3 Ω). $R_{eq}=$
$2+2$.
Connected to 12 V, the total current:
$\displaystyle \frac{12}{4}$.
Voltage across the parallel part:
$3\text{ A}\times2\,\Omega$.
Ready for more? Take the Unit 11 test.