Here we have a simple series resonant circuit. We know (or should know) that the voltage at Node 2 will be much higher than the supply voltage (node 1) at resonance. Precisely HOW MUCH higher will it be at resonance? And what is the voltage step-up factor exactly proportional to?

 

I'm surprised nobody has chimed in on this yet. I should mention that the voltage source is a true voltage source with no internal resistance. In the real universe that can make a big difference.