The effect of corona can be detected by___________?
Correct answer: D. all of the above
- A. presence of ozone detected by odour
- B. hissing sound
- C. faint luminous glow of bluish colour
- D. all of the above
Explanation
Corona ionizes the surrounding air, producing ozone with a characteristic smell, a hissing noise, and a faint bluish glow. Therefore, all the listed observations can indicate corona.
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