Determine the time constant for the network shown in figure
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Determine the time constant for the network shown in figure
A. <span class="math-tex">\(\frac{{RC}}{3}\)</span>
B. <span class="math-tex">\(\frac{{4RC}}{3}\)</span>
C. RC
D. <span class="math-tex">\(\frac{{2RC}}{3}\)</span>
Please scroll down to see the correct answer and solution guide.
Right Answer is: D
SOLUTION
Time constant of a RC circuit = Req Ceq
To find Req, we need to remove all the independent sources by replacing voltage source with short circuit and current with open circuit
\({R_{eq}} = R||2R = \frac{{2R}}{3}\)
Ceq = C
Time constant \(\left( \tau \right) = \frac{{2R}}{3}C\)
