Three identical charges q form an equilateral triangle of side a, with two charges on the x-axis

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Three identical charges q form an equilateral triangle of side a, with two charges on the x-axis and one on the positive y-axis.
(a) Find an expression for the electric field at points on the y-axis above the uppermost charge.
(b) Show that your result reduces to the field of a point charge 3q for y>>a.

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Related Book For  answer-question

Essential University Physics

ISBN: 978-0321976420

3rd Edition Volume 2

Authors: Richard Wolfsonby

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