Two Large Closely-Spaced Parallel Metal Plates Are Uniformly and Oppositely $\vec { E }$

question 62

Short Answer

Two large closely-spaced parallel metal plates are uniformly and oppositely charged and the magnitude of the $\vec { E }$ field between them is 7.6 × 10⁶ N/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 magnitude of the $\vec { E }$ field between the plates?

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