Q.3: Point charges q1(-6.0µC), q2(8.0µC), q3(-3.0µC) and q4(1.0µC) are placed in vacuum as shown in the figure. (a) Calculate the potential at point P. (b) Where shall a point charge q be placed so that the potential at pointPiS 2etor 93 20.0cm P q1 10.0cm q4

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Q: the electric potential

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