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Problem 2: A square loop of side a is placed in the xy-plane and centered on the origin. Find the electric field a distance z above the loop, which carries a uniform line charge density λ [Answer:

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Solution) Here we have linear charge density lambda = charge per unit length 서 ral a Component in-me 근bre ctan as wel, addine up all the 2 Coponeta to nd the tolal 2시스 군12 ATE。

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