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Voltmeter

Authors: Ms. Giselle dos Santos Castro - Federal University of Ceara - UFC
Dr. Nildo Loiola Dias - Federal University of Ceara - UFC

CONTROLS:

- Choose one of the 4 proposed circuits.
- Connect the black probe by dragging the circular end to the appropriate multimeter port and drag the other end to a point on the circuit marked with a letter (from A to G).
- Connect the red probe by dragging the circular end to the appropriate multimeter port and drag the other end to a point on the circuit marked with a letter (from A to G).
- Adjust the voltage source output potential difference at the cursor. For fine adjustment of the voltage use the buttons (<) and (>).
- Press the yellow dot on the edge of the multimeter selection knob to move to the appropriate voltmeter scale.
- Press the REPLACE MULTIMETER button to obtain a new multimeter, if the multimeter image is blurred (indicating that it has been damaged by improper use).

DESCRIPTION OF THE SIMULATION:

This simulation allows studying the operation of the voltmeter function of a digital multimeter. In the simulation only the voltmeter function is active. A circuit with 4 different resistors in series is connected to a DC voltage source that can be regulated from 0 to 650 V. There are 4 circuit options. All circuits are formed by 4 different resistors in series connected to the voltage source. The difference between one circuit and another is in the resistor values. Resistor values may vary (within the tolerance of each resistor) each time the simulation is restarted. If you try to measure a potential difference greater than the chosen scale allows, the voltmeter may burn out (this will be indicated by a blurry image of the multimeter). In this case press REPLACE MULTIMETER button to get a new one.

For an analysis of the data, consult one of the proposed ACTIVITY GUIDE.

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