Engineering Board Exam Reviewer · RC Circuits · hard
In a series RC circuit the capacitor voltage is twice the resistor voltage. If the source is 100 V rms, find the voltage across the resistor.
- 33.3 V
- 50 V
- 44.7 V
- 66.7 V
Answer
C. 44.7 V
Solution
Let VR=x, so VC=2x. VS=sqrt(x2+(2x)2)=x 5=100 x=100/ 5=44.7 V.
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