The voltmeter as an ohmic resistor in a circuit

VP3.2.4.2
The voltmeter as an ohmic resistor in a circuit
The voltmeter as an ohmic resistor in a circuit

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Description

The experiment P3.2.4.2 determines the internal resistance of a voltmeter by measuring the current flowing through it. In this experiment, the measuring range is extended by connecting a second resistor with a value equal to the internal resistance to the voltmeter in series.

Components of equipment sets

1 521487 AC/DC power supply PRO 0...12 V/3 A LD
1 57681  8  Plug-in board safety socket, 20/10 LD
1 57752  8  Resistor 4.7 kOhm, STE 2/19 LD
1 57775  8  Resistor, 680 kΩ, STE 2/19 LD
1 57771  8  Resistor, 220 kΩ, STE 2/19 LD
2 531110 Multimeter LDanalog 10 LD
3 500621  4  Safety connecting lead 50 cm, red LD
3 500622  4  Safety connecting lead 50 cm, blue LD

Experiment Instructions

PDF (Experiment description) PDF (Experiment description) P3.2.4.2 The voltmeter as an ohmic resistor in a circuit
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