An electric lamp having resistance 5 `Omega` gives correct brightness when 10 A current flows through it. We need to operate this lamp using AC source rated as 200 V-50 Hz. Calculate the self-indcutance of choke coil needed.

Explanation

To solve the problem step by step, we need to find the self-inductance of the choke coil required to operate the lamp at 200 V AC while ensuring that the current remains at 10 A.

### Step 1: Calculate the required impedance (Z)
The impedance of the circuit can be calculated using Ohm's law, which states that:
\[ Z = \frac{V}{I} \]
Where:
- \( V = 200 \, \text{V} \) (the voltage of the AC source)
- \( I = 10 \, \text{A} \) (the desired current)
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