A very large nonconducting plate lying in the xy-plane carries a charge per unit

Question

A very large nonconducting plate lying in the xy-plane carries a charge per unit area of 10?. A second such plate located at z = 1.00 cm and oriented parallel to the xy-plane carries a charge per unit area of -9?. Find the electric field for the following. (a) z < 0 Incorrect: Your answer is incorrect. Your response differs from the correct answer by more than 100%. ?/?0 (b) 0 < z < 1.00 cm Incorrect: Your answer is incorrect. Your response differs from the correct answer by more than 10%. Double check your calculations. ?/?0 (c) z > 1.00 cm ?/?0

Explanation / Answer

Let's begin from the b) Field strength of plates are in the same direction between plates, because they have opposite charge. So, to find strength in that case we should use E = E1 + E2 = s1/(2*e0) + s2/(2*e0) = (s1 + s2)/(2*e0) = 19/2 * s/e0 In cases a) and c) we must subtract strengthes because they are in the opposite directions. You can finish yourself. a) 1/2 b) 19/2 c) 1/2 Good luck!

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