Circuits, Formulas and Tables Electrical Engineering  Basic vocational knowledge (Institut für Berufliche Entwicklung, 201 p.) 
7. Measurement Circuits 

Voltage measurement (A)
Voltage measurement (B)
By connecting in series of a resistor (Rv), an extension of the measuring range of the voltmeter is obtained
Current measurement (A)
Current measurement (B)
By connecting in parallel a shunt resistor (Rp), an extension of the measuring range of the ammeter is obtained.
Voltage and current measurement for
the determination of the resistance
The currentexact connection is used when the resistance (Rx) to be determined, is very high.
Current and voltage measurement for
the determination of the resistance
The voltageexact connection is used when the resistance (Rx) to be determined is very small if the resistance Rx is calculated according to the following equation:
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