I am trying to build an induction heater but i am confused beacause whenever i find an article about it there is no source that says how i am supposed to pick the L or C for it.

I found that i can calculate the resonant frequency from the formula f=1/2π*sqrtLC but i don't know the frequency either.

So i was wondering if i just pick a frequency and from how many hz to how many hz and then calculate the L C or i have a big gap in my knowledge somewhere because i cannot understand how to find this.

Thanks for the help in advance.