Match the List-I with List-II. For a coaxial cable in which the dielectric has inner radius 'a' and outer radius 'b' where σ is conductivity.

56. Match the List-I with List-II. For a coaxial cable in which the dielectric has inner radius 'a' and outer radius 'b' where σ is conductivity.

List-I

(Transmission line parameter)

• (a) Capacitance per unit length
• (b) Conductance per unit length
• (c) Inductance per unit length
• (d) Characteristic Impedance

List-II

(Expression)

1. \( \frac{2\pi\epsilon}{\ln\left(\frac{b}{a}\right)} \)
2. \( \frac{1}{2\pi}\sqrt{\frac{\mu}{\epsilon}}\ln\left(\frac{b}{a}\right) \)
3. \( \frac{2\pi\sigma}{\ln\left(\frac{b}{a}\right)} \)
4. \( \frac{\mu}{2\pi}\ln\left(\frac{b}{a}\right) \)

Choose the correct answer from the options given below:

	(a)	(b)	(c)	(d)
A.	II	I	III	IV
B.	III	I	IV	II
C.	IV	I	II	III
D.	I	III	IV	II

Answer: Option B

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