#### daveleonard

##### Member

"A series circuit consists of an inductance of 500uH and a capacitance of 400pf. What is the resonant frequence?

And:

Three identical inductors valued at 90 MiliHenrys are connected in parallel. The total equivalent inductance is?

I know the answer is 30 MH but what is the math that gets that answer?

Thanks a lot.