In an oscillating LC circuit, L $=24\mathrm{.}0$ mH and C $=7\mathrm{.}10$F$.$ At time t $=0$ the current is $9\mathrm{.}50$ mA$,$ the charge on the capacitor is $3\mathrm{.}50$C$,$ and the capacitor is charging.

$($a$)$ What is the total energy in the circuit?

J

$($b$)$ What is the maximum charge on the capacitor?

C

$($c$)$ What is the maximum current?

A

$($d$)$ If the charge on the capacitor is given by q $=$ Q cos$($t $+),$ what is the phase angle $?$

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$($e$)$ Suppose the data are the same, except that the capacitor is discharging at t $=0.$ What then is $?$