Evolution of voltage and current

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<em>Guest post from Peppe, a student in Italy</em>

Hi,

Someone can help me?

This the exercise:
<p style="margin-bottom: 0cm;">In the following transmission lines circuit we assume that the generator Vg is a constant voltage equal to 3.3V and that the switch is closed at S = 0. Starting from the parameters shown in figure, graphics:</p>

<p style="margin-bottom: 0cm;">a) the tension on both lines as a function of x, V(x), for t=0.2ns;
b) the current on the two lines as a function of x, I(x), for t=0.4ns;
c) the line voltage as a function of time, V(t), for x=3cm;
d) the line current as a function of time, I(t), for x=-4cm;
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<img src="http://ping.fm/63i18" alt="exercise" width="508" height="274" />