Answer
The series LCR circuit shown is driven by a generator with voltage e = e msinwt. The time dependence of the current i which flows in the circuit is shown in the plot.
- How should w be changed to bring the current and driving voltage into phase?
- From the plot, it is clear that the current is LEADING the applied voltage.
- To bring the current into phase with the applied voltage, we need to increase XL and decrease XC.
- Increasing w will do both!!