Capacitor practice problems
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Read the capacitor class notes.
![](/circuits/practice/capacitors/c11c.png)
The voltage across a capacitor with C = 220 pF is sinsuoidal:
vC(t) = VA·cos ωt, where VA = 11 V and ω = 200 krad/sec.
Determine the expression for the capacitor current and calculate the value of the amplitude.