Physics · Electromagnetic Waves
The characteristic impedance (Z 0 ) of a coaxial transmission line with internal diameter 'a', external diameter 'b', and relative permittivity ε r is given by the expression:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Z 0 = 276 √ε r log(a/b)
- 2Z 0 = 138 √ε r log(b/a)✓
- 3Z 0 = 138 √ε r log(a/b)
- 4Z 0 = 118√ε r log(a/b)
Correct answer
Z 0 = 138 √ε r log(b/a)
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