2. Electrical Components

Definitions

Resistor ($R$)

• Reduces the rate of flow of charge

$$R = \dfrac{V}{i}, \quad P = i^2R$$

Capacitor ($C$)

• Stores charge on parallel plates

$$C = \dfrac{Q}{V}, \quad E_{elec} = \dfrac{1}{2} \dfrac{Q^2}{C}$$

Inductor ($L$)

• Stores energy in a magnetic field

$$L = \dfrac{V}{\dfrac{di}{dt}}, \quad E_{mag} = \dfrac{1}{2}Li^2$$