Question: a)Find the magnitude of the electric field at points on the x-axis. Express your answer in terms of the variables q , a , x

a)Find the 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.

b)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.

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