An electrical technician requires a capacitance of `2 muF` in a circuit across a potential difference of 1 kV. A large number of `1 mu F` capacitors are available to him each of which can withstand a potential difference of not more than 400 V. Suggest a possible arrangement that requires the minimum number of capacitors.

Explanation

To solve the problem, we need to arrange the available 1 µF capacitors in such a way that we achieve a total capacitance of 2 µF while ensuring that the voltage across each capacitor does not exceed 400 V.

### Step-by-Step Solution:

1. **Determine the Voltage Requirement**:
- The technician requires a potential difference of 1 kV (1000 V) across the capacitors.
- Each 1 µF capacitor can withstand a maximum of 400 V.

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