Three nonconducting strips are bent to form arcs and, when assembled, they form part of a circle of radius r-6.47 cm. The three strips have linear charge densities of A₁-88.0 nC/m, 1₂-179 nC/m, and 23-268 nC/m, respectively, and subtend angles of 60°, 120°, and 45°, respectively, atthe center.120λ₁2₂(a) Determine the electric potential at the center of the circle of which the strips form a part.V(b) You use a fourth nonconducting strip to close the circle. What should be the linear charge density on this strip if the potential at the center of the circle is to be zero?nC/m

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