- A dependent current or voltage source is one whose value depends on another voltage or current elsewhere in the circuit - Dependent sources symbolized by diamond shape - Types of circuits include: voltage-controlled voltage source (VCVS), voltage-controlled current source (VCCS), current-controlled voltage source (CCVS), current-controlled current source (CCCS) - Turning off a voltage source = to replacing it with a short circuit (wire) to bypass it - Turning off a current source = replacing it w/ open circuit (break) --- ![[Pasted image 20260128172838.png|center|500]] - For simple geometry, resistivity $R=\frac{\rho L}{A}$ where $\rho$ is material resistivity, $L$ is resistor length, $A$ is cross-sectional area - Conductance $G=\frac{I}{V}=R^{-1}$ > [!definition] Ohm's Law > > Voltage $V$ in a circuit is proportional to current $I$ flowing in it: $V\propto I$ > Resistance provides a factor on $I$: $V=IR$ > Power consumed by a resistor $P=VI$, so > $P=VI=v\left( \frac{V}{R} \right)=\frac{V^2}{R}$ > $P=VI=i(IR)=i^2R$