Engineering Board Exam Reviewer · RL Circuits · medium
In the series RL circuit shown, a 150 V (rms) source with =1000 rad/s is connected to R=24, and L=18 mH. By how many degrees does the current lag the source voltage?
- 53.1°
- 45°
- 36.9°
- 90°
Answer
C. 36.9°
Solution
= -1!≤ft(XL/R )= -1!≤ft(18, /24, )=36.9°. In an RL circuit the current lags the voltage.
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