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The open circuit line will have a reflection coefficient of

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in Electromagnetic Theory by (188k points)
The open circuit line will have a reflection coefficient of

(a) 0

(b) 1

(c) -1

(d) ∞

The question was asked during an interview.

This is a very interesting question from Transmission Lines topic in portion Transmission Lines of Electromagnetic Theory

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The correct option is (b) 1

To explain I would say: An open circuit line has infinite output impedance. Any wave incident at the output will be completely reflected. Thus the reflection coefficient is unity.

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