electronics-rc-circuits Related Question Answers

1. Calculate the magnitude of the impedance in the given circuit.





2. Calculate the phase angle in the given circuit.





3. What is the phase angle for a parallel circuit consisting of a 500 kHz, 5 Vac source with a 47 pF capacitor, and a 4.7 k resistor in parallel?





4. Which circuit is represented by the frequency response curve in the given figure?





5. What is the phase angle in the given circuit?





6. What is the current through XC1 in the given circuit?





7. What is the total current in the given circuit?





8. Which statement about a series RC circuit is true?




9. If the frequency increases in the given circuit, how would the total current change?





10. What is the effect of increasing the resistance in a series RC circuit?





11. A 10 k capacitive reactance equals a 100 µS capacitive susceptance.



12. In a purely capacitive ac circuit, the amount of energy converted to heat is proportional to the circuit's current.



13. Resistance is the same as impedance in an RC circuit.



14. The magnitude of the impedance in the given circuit is approximately 500 .



15. In parallel RC circuits, the larger the value of C, the larger the phase angle.



16. When a series RC circuit is used as a low-pass filter, the output is taken from across the capacitor.



17. If the resistor drops 6 V and the capacitor drops 8 V in a series RC circuit, the source voltage equals 10 V.



18. The current lags the source voltage in a series RC circuit.



19. If the frequency increases in a parallel RC circuit, the phase angle decreases.



20. The output voltage from an RC high-pass filter increases as the frequency decreases.



21. If a 100 resistance is connected to a 100 capacitive reactance in a series RC circuit, the impedance equals 200 .



22. If the bandwidth of an RC low-pass filter is 20 kHz, the cutoff frequency is also 20 kHz.



23. The phase angle in the given circuit equals___.





24. Connecting the oscilloscope as shown in the given figure will _____.





25. If the given circuit is used as a filter, the cutoff frequency is _____.





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