Precautions for measuring large-value resistance with a multimeter
1. When the resistance value of the measured resistance Rx exceeds 100MΩ, the total resistance value R after parallel connection is very close to the resistance value of the selected standard resistance R1. In addition, the digital multimeter itself has an error of ±1 word, which will increase the measurement error. big.
Therefore, this method is not suitable for measuring resistances with a resistance value greater than 100MΩ.
2. During the measurement operation, the resistance Rx under test should be connected in parallel with the standard resistance R1 firmly, and the two should be fixed with alligator clips if necessary.
