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**[SOLVED] Finding current in LC circuit**

**1. Homework Statement**

A [itex]18.0 \mu {\rm F}[/itex] capacitor is placed across a [itex]22.5 {\rm V}[/itex] battery for a few seconds and is then connected across a [itex]12.0 \rm mH[/itex] inductor that has no appreciable resistance.

After connecting the capacitor and inductor together, find the maximum current in the circuit.

**2. Homework Equations**

[tex]i=-\omega*Q*sin(\omega*t+\varphi)[/tex]

**3. The Attempt at a Solution**

This sounds like a pretty simple question and I think I'm complicating it too much. Does this have anything to do with finding the angular frequency. I know current is maximum when capacitor potential and induced emf is zero. But I don't know what the relationship using an equation. Do I have to derive one? I can't seem to find one.