Two Large Closely-Spaced Parallel Metal Plates Are Uniformly and Oppositely $7.6 \times 10 ^ { 6 } \mathrm {~N} / \mathrm { C }$

question 87

Short Answer

Two large closely-spaced parallel metal plates are uniformly and oppositely charged and the electric field between them is $7.6 \times 10 ^ { 6 } \mathrm {~N} / \mathrm { C }$ .
(a) What is the charge per unit area on each plate?
(b) If the plates are now moved two times farther apart, what is the electric field between the plates?

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