Engineering Board Exam Reviewer · RC Circuits · medium
In the series RC circuit shown, a 50 V (rms) source with =10000 rad/s is connected to R=12, and C=6.25, F. By how many degrees does the current lead the source voltage?
- 36.9°
- 53.1°
- 45°
- 90°
Answer
B. 53.1°
Solution
= -1!≤ft(XC/R )= -1!≤ft(16, /12, )=53.1°. In an RC circuit the current leads the voltage.
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