Twelve identical capacitors of capacitance C are connected across each edge of a cube. Find equivalent capacitance across one of the face diagonals.

Explanation

To find the equivalent capacitance across one of the face diagonals of a cube formed by 12 identical capacitors of capacitance \( C \), we can follow these steps:

### Step 1: Understand the Configuration
We have a cube where each edge has a capacitor of capacitance \( C \). We need to find the equivalent capacitance across one of the face diagonals, say from point A to point C.

### Step 2: Visualize the Cube
Label the vertices of the cube as follows:
- A (front bottom left)
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