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RC Circuits
A 2 k resistor is in series with a 0.015 F capacitor across a 15 kHz ac source. What is the magnitude of the total impedance and the phase angle?
2121 and θ = –19.5°
734 and θ = –38.9°
73.4 and θ = –19.5°
707 and θ = –19.5°
2121 and θ = –19.5°
734 and θ = –38.9°
73.4 and θ = –19.5°
707 and θ = –19.5°
Answer
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Related Question
RC Circuits
A 470 resistor and a 0.2 F capacitor are in parallel across a 2.5 kHz ac source. The admittance, Y, in rectangular form, is
2.12 mS + j3.14 mS
212
318.3
3.14 mS + j2.12 mS
2.12 mS + j3.14 mS
212
318.3
3.14 mS + j2.12 mS
Answer
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RC Circuits
When the frequency of the voltage applied to a series RC circuit is decreased, the impedance
decreases
remains the same
doubles
increases
decreases
remains the same
doubles
increases
Answer
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In the complex plane, the number 4 + j3 is located in the
fourth quadrant
first quadrant
second quadrant
third quadrant
fourth quadrant
first quadrant
second quadrant
third quadrant
Answer
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RC Circuits
A resistor and a capacitor are in series across a 20 V ac source. Circuit impedance is 4.33 k. Current flow in the circuit is
9.2 mA
4.6 mA
92 mA
460 mA
9.2 mA
4.6 mA
92 mA
460 mA
Answer
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RC Circuits
A capacitor with 150Ω of capacitive reactance is across an ac source. The impedance, expressed in polar form, is
Z = 150 –90° Ω
Z = 150 angle – 90° Ω
Z = 150
Z = 150 angle 180° Ω
Z = 150 –90° Ω
Z = 150 angle – 90° Ω
Z = 150
Z = 150 angle 180° Ω
Answer
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