The dielectric strength of air under normal condition is about

The dielectric strength of air under normal condition is about:

1. 10.2 kVp/cm
2. 30 kVp/cm
3. 54.28 kVp/cm
4. 200 kVp/cm

Correct answer: 2. 30 kVp/cm

The dielectric strength of air under normal condition is about 30 kVp/cm or 3kVp/mm