Three point charges q1, q2, and q3 are situated at three corners of a

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Three point charges q1, q2, and q3 are situated at three corners of a rectangle as shown in the diagram below. Here q1 = +6.00 μC, q2 = −6.00 μC, q3 = +4.00 μC. (a) What is the electric potential at the free corner where there is no charge? V (b) What charge should be placed at the free corner for the electric potential at the center of the rectangle to be zero? Include both magnitude and sign if applicable. μC

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Three point charges

q_{1}, q_{2}

, and

q_{3}

are situated at three corners of a rectangle as shown in the diagram below. Here

q_{1} = + 6.00 μ C, q_{2} = - 6.00 μ C, q_{3} = + 4.00 μ C

. (a) What is the electric potential at the free corner where there is no charge?

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V (b) What charge should be placed at the free corner for the electric potential at the center of the rectangle to be zero? Include both magnitude and sign if applicable.