The circuit inFig. 2.134 is to control the speed of a motor such that the motor draws currents 5 A, 3 A, and 1 A when the switch is at high, medium, and low positions, respectively. The motor can be modeled as a load resistance of 20 mΩ. Determine the series dropping resistances R₁, R₂, and R₃.

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Low 10-A, 0.01-2 fuse Medium High R2 R3 Motor