Certainly! Here's a transcription of the handwritten text: --- **9)** Doing some research find the maximum electric field below which air remains a fairulator but above which it disintegrates and starts to pass electric currents. In view of problem 8, discuss about values of \( V_, H, r \) such that one will start to attract light wings.

# Analysis of Electric Field and Air Breakdown ## Introduction The task involves understanding the electric field strength at which air behaves as an insulator versus when it becomes a conductor. This is crucial in various applications including electrical engineering and atmospheric science. ## Electric Field in Air ### Breakdown Voltage - The electric field threshold for air breakdown is approximately \( 3 \times 10^6 \) V/m (volts per meter). - Above this field strength, air becomes ionized, allowing it to conduct electricity. ### Factors Influencing Breakdown 1. **Voltage (\( V \))**: The potential difference applied across two points. 2. **Height (\( H \))**: The distance between conductive elements, which affects the electric field strength. 3. **Radius (\( r \))**: The curvature radius of conductors; sharper points can lead to lower breakdown voltages. ## Values Discussion To ensure air remains an insulator and to understand the conditions under which it begins to conduct, consider: - **Low Electric Field Region**: - \( V < 3 \times 10^6 \) V/m - Air acts as an insulator. - **Critical Values**: - \( V \) should be maintained below breakdown voltage to prevent ionization. - \( H \) and \( r \) must be optimized based on experimental setups to maintain safe electric fields. ## Conclusion Understanding the parameters \( V \), \( H \), and \( r \) is essential for controlling electrical discharges and ensuring safety in electrical applications. Further experimentation is required to quantify these values accurately in practical scenarios.