A coil of wire that resists changes in current and stores energy in a magnetic field.

The proportionality constant between magnetic flux and current: $\Phi_B = LI$.

Henry (H)

The voltage generated in an inductor due to a changing current, opposing the change: $\varepsilon = -L \frac{dI}{dt}$.

The time it takes for the current in an LR circuit to reach approximately 63.2% of its maximum value: $\tau = \frac{L}{R}$.

The rate at which energy oscillates between the capacitor and inductor in an LC circuit: $\omega = \frac{1}{\sqrt{LC}}$.

Inductor: Stores energy in a magnetic field, resists changes in current. Capacitor: Stores energy in an electric field, resists changes in voltage.

LR Circuit: Contains inductor and resistor, current changes exponentially. LC Circuit: Contains inductor and capacitor, energy oscillates between them sinusoidally.

Inductor: $U = \frac{1}{2}LI^2$ (magnetic field). Capacitor: $U = \frac{1}{2}CV^2$ (electric field).

Inductor: Acts like an open circuit initially. Capacitor: Acts like a short circuit initially.

Inductor: Acts like a wire (short circuit) after a long time. Capacitor: Acts like an open circuit after a long time.

An induced EMF is generated, opposing the change in current.

The current increases exponentially towards a maximum value, determined by the time constant.

The current decreases exponentially to zero, determined by the time constant.

Energy oscillates between the capacitor and inductor, leading to sinusoidal oscillations in charge and current.

The energy stored is quadrupled (since $U = \frac{1}{2}LI^2$).