Engineering Board Exam Reviewer · RC Circuits · hard
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 parallel with the capacitor. Find the total impedance of the circuit in polar form.
- 75 -36.9°,
- 75 36.9°,
- 201 -14.4°,
- 92.4 0°,
Answer
A. 75 -36.9°,
Solution
XC=1/ C= 1(2000)(10, F)=50, . The parallel branch is Zp=R2(-jXC)/R2-jXC=15-j45, and ZT=R1+Zp=60-j45, =75 -36.9°, .
More RC Circuits questions
- 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…
- In the series RC circuit shown, a 340 V (rms) source with =5000 rad/s is connected to R=150, and C=2.5, F. Find the apparent power…
- In the series RC circuit shown, a 255 V (rms) source with =2000 rad/s is connected to R=150, and C=6.25, F. Find the real power dissipated…