I've been studying for the Extra Class Amateur Radio exam and while taking a practice test I got the following question:
What is the phase angle between the voltage across and the current through a series R-L-C circuit if XC is 50 ohms, R is 100 ohms, and XL is 75 ohms?
- 76 degrees with the voltage leading the current
- 76 degrees with the voltage lagging the current
- 14 degrees with the voltage lagging the current
- 14 degrees with the voltage leading the current
I thought I knew how to figure out this problem. I wasn't, however, coming up with a reasonable answer. It took nearly 15 minutes for me to realize that my calculator was set to radian mode.
Duhhhh!
