**Category:** Electromagnetism

**Subtype:** LC Circuits (Oscillating Circuits)

**Problem Description:** This problem involves two capacitors and two inductors forming oscillating circuits. The task is to determine the shortest time after the circuits start oscillating when the voltage difference between the two capacitors reaches 4 V. 

**Key Points:**
- Two capacitors (\(C_1\) and \(C_2\)) with values of \(0.2 \mu F\) each.
- Capacitor \(C_1\) is charged to 8 V, and capacitor \(C_2\) is charged to 16 V.
- The problem requires calculating the time when the voltage difference between the two capacitors is 4 V after they start oscillating. 

**Options for the answer:**
A. \(\frac{10^{-6}}{3} s\)  
B. \(\frac{2 \cdot 10^{-6}}{3} s\)  
C. \(\frac{10^{-6}}{6} s\)  
D. \(\frac{10^{-6}}{12} s\)