A parallel plate capacitor has two plates, each of area 3.0 × 10−4 m2, separated by 3.5 × 10−4 m. The space between the plates is filled with a dielectric. When the capacitor is connected to a source of 120 V rms at 8.0 kHz, an rms current of 1.5 × 10−4 A is measured.
(a) What is the capacitive reactance?
(b) What is the dielectric constant of the material between the plates of the capacitor?