Question

The breakdown strength of air for small gaps (1 mm) under uniform field condition and standard atmospheric conditions will be:

• A. 50 kV/cm
• B. 43.45 kV/cm
• C. 25.58 kV/cm
• D. 40.59 kV/cm

Hint:

For small gaps in air, the breakdown strength is usually considered to be approximately 43.45 kV/cm, which is a commonly accepted value under standard conditions.

Answer 1

The Correct Option is B

The breakdown strength of air is a property that describes the maximum electric field that air can withstand before breaking down and allowing electrical discharge. For small gaps under uniform field conditions, the breakdown strength of air is typically around 43.45 kV/cm at standard atmospheric conditions.