The voltage of an electromagnetic wave traveling on a transmission line is given
ID: 1990439 • Letter: T
Question
The voltage of an electromagnetic wave traveling on a transmission line is given by v(z,t)=5e^-alpha*z(4pi*10^9t-20pi*z) volt, where z is the distance in meters from the generator. Find the frequencyA) 2.5Ghz B) 5 Ghz C) 2Ghz D) 20 ghz The voltage of an electromagnetic wave traveling on a transmission line is given by v(z,t)=5e^-alpha*z(4pi*10^9t-20pi*z) volt, where z is the distance in meters from the generator. Find the frequency
A) 2.5Ghz B) 5 Ghz C) 2Ghz D) 20 ghz
A) 2.5Ghz B) 5 Ghz C) 2Ghz D) 20 ghz
Explanation / Answer
(z,t) = 5e-az sin(4 ×109 t 20z)
= 4 × 109 rad/s
, f = /2 = 2 × 109 Hz = 2 GHz;
so answer is option C .
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