5. (5%) Two conductors in a simple lossy dielectric medium with ε&σ is shown in following figure. The RC product is (A) 1/εσ (B) σ/ε (C) εσ (D) ε/σ

1. (5%) A cylindrical capacitor consists of an inner conductor of radius a, and an outer conductor whose inner radius is b. The space between the conductors is filled with a dielectric of permittivity ε. The length of the capacitor is L. The capacitance of this this capacitor is (A) C=2πεL/ln(b/a) (B) C=2πεL/In(a/b)(C)C=2πεL/In(ab) (D) none of the mentioned

5. (5%) Two conductors in a simple lossy dielectric medium with ε&σ is shown in following figure. The RC product is
(A) 1/εσ
(B) σ/ε
(C) εσ
(D) ε/σ

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