Question: Two parallel plates have charges Q and Q. When the space between the plates is devoid of matter, the electric field is 2.5 105

Two parallel plates have charges Q and –Q. When the space between the plates is devoid of matter, the electric field is 2.5 × 105 V/m. When the space is filled with a certain dielectric, the field is reduced to 1.2 × 105 V/m.

(a) What is the dielectric constant of the dielectric?

(b) If Q = 10 nC, what is the area of the plates?

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