Identical point charges (+20 ??C) are placed at the corners of an equilateral triangle with sides of 2.0 m length. How much external energy is required to bring a charge of 45 ?C from infinity to the midpoint of one side of the triangle? 21 J 15 J 35 J 28 J 12 J
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First, we need to find the electric potential at the midpoint of one side of the triangle due to the two charges at the corners. Show more…
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