AP Physics C: Electricity and Magnetism / Unit 13: Electromagnetic Induction
13.6 Circuits with Capacitors and Inductors (LC Circuits)
Notes
Energy sloshes between the capacitor's electric field and the inductor's magnetic field.
$$\omega=\frac{1}{\sqrt{LC}}$$
- It's like a mass on a spring: charge oscillates sinusoidally.
Practice
$L=1$ H, $C=1\times10^{-4}$ F. $\omega=$
$\displaystyle \frac{1}{\sqrt{10^{-4}}}$.
When the capacitor's charge is zero, the current is:
All energy in the inductor.
LC oscillations are like a mass on a spring with $L$ acting like:
It resists changes in current.
Ready for more? Take the Unit 13 test.