A parallel plate capacitor has two plates, each of area 3.0 104 m 2 , separated

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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?

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