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Mei is an electrical engineer who has designed and built a robot that can accurately launch tennis balls a great distance She is testing her robot s design 1 Mei is inspecting her robot s electronic circuits Electrical engineers use complex numbers when calculating voltage and resistance Part A The total voltage of a circuit is the sum of its sources One of the robot s circuits has three source voltages V listed below Find the total voltage of the circuit Source 1 9 40 V Source 2 531 V Source 3 2 6i V Part B Another circuit has two resistors in parallel with individual resistances R and R The total resistance R is given by the formula below R T R R 1 2 R R 1 www Find the total resistance Write your answer in the form a bi R R R 2 1 ohms 1 R 1 2i ohms
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