b)Find magnitude of the electric field at points on the x axis Express your answ

Question

b)Find magnitude of the electric field at points on the x axis Express your answer in terms of the variables q, a, x, and appropriate constants. c)What does this expression reduce to when the distance between the two charges is much less than x? Express your answer in terms of the variables q, a, x, and appropriate constants. Find magnitude of the electric field at points on the x axis Express your answer in terms of the variables q, a, x, and appropriate constants. What does this expression reduce to when the distance between the two charges is much less than x? Express your answer in terms of the variables q, a, x, and appropriate constants.

Explanation / Answer

b)due to q is E1 = kq/(a^2+x^2)

due to -q is E2 = -kq/(a^2+x^2)

Net = (2kq/(a^2+x^2))*a/sqrt(a^2+x^2) = 2kqa/(a^2+x^2)^(3/2)

c) when a < < x

Net = 2kqa/x^3

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