1.

For high frequencies, capacitor acts as _________(a) Open circuit(b) Short circuit(c) Amplifier(d) RectifierI have been asked this question during an interview for a job.The query is from Capacitors in portion Capacitance and Capacitors of Basic Electrical Engineering

Answer»

The correct choice is (b) Short circuit

To ELABORATE: Capacitive impedance is INVERSELY PROPORTIONAL to frequency. Hence at very HIGH frequencies, the impedance is almost equal to zero, hence it acts as a short circuit and there is no voltage across it.



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