Design an ohm-volt-ampere scale with the following characteristics Voltage 5 25 100 Volt ranges current 10 100 500 milliampere ranges ranges of resistance 20 200 2000 middle of the step Ohm in the...

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Extracted text: Design an ohm-volt-ampere scale with the following characteristics Voltage 5 25 100 Volt ranges current 10 100 500 milliampere ranges ranges of resistance 20 200 2000 middle of the step Ohm in the E=3v Rm=500 Ohm Ifsd=50 Micro ampere Draw the measurement chart with the reading board, provided that the scale has two main keys, one to choose the type of scale and the other to choose the range