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Three point charges are located at the corners of an equilateral triangle, as shown. The lower...

Three point charges are located at the corners of an equilateral triangle, as shown. The lower right charge has a value of −4.82μC. P is the midpoint on the base of the triangle and q1 is directly above it. (k = 9 x 109N ∙ m2/C2) [12 marks]

a) Calculate the electric field at P due to q1(7μC). [2 marks]
b) Calculate the electric field at P due to q2(2μC). [2 marks]
c) Calculate the electric field at P due to q3 (−4.82μC). [2 marks].
d) Using (a),(b), and (c), calculate the electric field at P due to q1, q2, and q3. [4 marks] e) If a charge of 1μC is place at P, determine the force acting on this particle. [2 marks]

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