1.

Distilled water at 25°C is characterized by σ = 1.7 x 10¯⁴ mho/m and ε = 78 ε₀ at a frequency of 3 GHz. Its loss tangent is (ε = 10¯⁹/36π F/m)

A. 1.3 x 10¯⁵
B. 1.3 x 10¯³
C. 1.7 x 10¯⁴/78
D. 1.7 x 10¯⁴/78ε₀
Answer» B. 1.3 x 10¯³


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