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Three charges A, B and C are placed at the locations of a circle as shown in figure 3. The circle has a diameter

Three charges A, B and C are placed at the locations of a circle as shown in figure 3. The circle has a diameter of 1.5m. a) If QA = -35C, QB = -50 C and Qc = +25 C, calculate the force exerted in magnitude and direction by the charges at B and C on the charge placed at A. 45 C Figure 3 B [12 marks] b) In the arrangement shown in Figure 3, calculate the electric potential at the centre of the circle. [8 marks]

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