1. Determine the inductance (L) of the inductor. 2. Find the current (I) flowing through the inductor. 3. Use the formula: $U = \frac{1}{2}LI^2$.

1. Identify the inductance (L) and resistance (R). 2. Calculate the time constant: $\tau = \frac{L}{R}$. 3. Use the formula: $I(t) = \frac{\varepsilon}{R}(1 - e^{-t/\tau})$.

1. Identify the EMF ($\varepsilon$) and time constant ($\tau$). 2. Use the formula: $V_L(t) = \varepsilon e^{-t/\tau}$.

1. Identify the maximum charge ($Q_{max}$) and angular frequency ($\omega$). 2. Use the formula: $Q(t) = Q_{max} \cos(\omega t)$.

1. Identify the maximum charge ($Q_{max}$) and angular frequency ($\omega$). 2. Use the formula: $I(t) = -\omega Q_{max} \sin(\omega t)$.

Energy oscillates between the capacitor's electric field and the inductor's magnetic field, leading to sinusoidal variations in charge and current.

Apply Faraday's Law to the inductor: $\varepsilon = -L \frac{dI}{dt}$

Current flows, and the inductor stores energy in its magnetic field. The current increases exponentially according to $I(t) = \frac{\varepsilon}{R}(1 - e^{-t/\tau})$

Initially, an inductor acts like an open circuit, resisting current flow.

After a long time, an inductor acts like a wire, allowing current to flow freely.

Use the formula: $U = \frac{1}{2}LI^2$

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.