31. Alternating Current
Phasors for Capacitors Practice Problems
31. Alternating Current
Phasors for Capacitors Practice Problems
2 problems
1PRACTICE PROBLEM
A series circuit has an inductor L, a capacitor C, and a power source of variable angular frequency ω. At the angular frequency, ω0, the inductive reactance equals the capacitive reactance. Calculate i) the angular frequency ω0, and ii) the reactances of the inductor (XL) and capacitor (XC) for L= 220.0 mH and C= 8.25 μF.
2PRACTICE PROBLEM
An alternating current power supply of rms voltage 120.0 V and frequency 80.0 Hz is connected to a parallel plate capacitor. The rms current in the circuit is 200.0 mA. Calculate the capacitance of the parallel plate capacitor.