A Parallel-Plate Capacitor,with Air Between the Plates,is Connected Across a Voltage

question 4

Short Answer

A parallel-plate capacitor,with air between the plates,is connected across a voltage source.This source establishes a potential difference between the plates by placing charge of magnitude 4.15 × 10^-6 _C on each plate.The space between the plates is then filled with a dielectric material,with a dielectric constant of 7.74.What must the magnitude of the charge on each capacitor plate now be,to produce the same potential difference between the plates as before?

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