Engineering Board Exam Reviewer · RC Circuits · hard
A series RC circuit has R=1.5 k and C=0.1, F. At what frequency is the phase angle between the source voltage and current 45°?
- 1.06 kHz
- 6.67 kHz
- 0.531 kHz
- 2.12 kHz
Answer
A. 1.06 kHz
Solution
The angle is 45° when XC=R: 1/2π fC=R f=1/2π RC= 12π(1500)(0.1×10-6)=1.06 kHz.
More RC Circuits questions
- In the series-parallel RC circuit shown, a 200 V (rms) source with =2000 rad/s drives R1=15, , R2=120, , and C=12.5, F. Resistor R2 is in…
- In the series-parallel RC circuit shown, a 150 V (rms) source with =2000 rad/s drives R1=45, , R2=150, , and C=10, F. Resistor R2 is in…
- In a series RC circuit, the capacitor voltage VC compared with the resistor voltage VR
- A series RC circuit has R=60, and XC=80, . What is its power factor?
- In a series RC circuit, the voltage across the resistor is 30 V and the voltage across the capacitor is 40 V. What is the source voltage?
- A 100, resistor and a 22, F capacitor are connected in series across a 120 V, 60 Hz source. Find the current.
- A 1 k resistor and a 0.1, F capacitor are connected in series across a 1 kHz source. Find the magnitude of the total impedance.
- In the parallel RC circuit shown, a 480 V (rms) source with =10000 rad/s feeds R=48, and C=5, F in parallel. By how many degrees does the…
- In the parallel RC circuit shown, a 96 V (rms) source with =10000 rad/s feeds R=6, and C=12.5, F in parallel. Find the magnitude of the…
- In the parallel RC circuit shown, a 120 V (rms) source with =10000 rad/s feeds R=12, and C=20, F in parallel. Find the total current drawn…