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The relative permittivity of air is equal to ____

49. The relative permittivity of air is equal to ____.

1. 0
2. -1
3. 1
4. infinity

Answer: C) 1

Explanation:

The relative permittivity of air is equal to, In other words, air has the same permittivity as open space (vacuum). The relative permittivity of the vacuum is also 1.