A) \[\frac{R}{\sqrt{2}}\]
B) \[R\]
C) \[\sqrt{2}R\]
D) \[2R\]
Correct Answer: C
Solution :
RC is time constant, then \[\tau =RC\] According to question, \[\omega =\frac{1}{\tau }=\frac{1}{RC}\] \[R=\frac{1}{\omega C}\] Impedance of the R-C circuit \[Z=\sqrt{{{R}^{2}}+X_{C}^{2}}\] \[Z=\sqrt{{{R}^{2}}+{{\left( \frac{1}{\omega C} \right)}^{2}}}\] \[Z=\sqrt{{{R}^{2}}+{{R}^{2}}}=\sqrt{2}R\]You need to login to perform this action.
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