Maharashtra BoardEnglish MediumSTD 12 SciencePhysicsAC Circuits2 Marks
Question
For very high frequency AC supply, a capacitor behaves like a pure conductor. Why ?
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Answer
The reactance of a capacitor is $X_C=\frac{1}{2 \pi f C}$, where $f$ is the frequency of the $A C$ supply and $C$ is the capacitance of the capacitor. For very high frequency, $f_{,} X_C$ is very small. Hence, for very high frequency $A C$ supply, a capacitor behaves like a pure conductor.
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