simple oscillator, where did the energy go?

Hi

Please have a look on the linked page below, you can see the questions there. Please help me with those queries. Thank you for your help.

page: **broken link removed**

Regards
PG

As someone else noted in one of your other threads, these handwritten notes are too difficult to read. Please type them in your post and attach a decent sketch if you want an answer.

The current going into the inverter will not be constant. This will be a sinewave and you are implying that you have a flat 1A dc current flowing into the oscillator, which I doubt will be the case. If this is the case, then the extra power will be used up as heat in the oscillator. Also, I notice that you have 0-10V going into the oscillator, yet have a +/-10V signal coming out. This will further complicate the case. This sounds like Homework Help, but the answer is not that straight forward