Plusivo DM401B - Testing some Components Using Multimeter; Potentiometer Test

Third, we will do some calculations using Ohm’s law.
● Calculate the current passing through the resistor:
𝑅
𝑉
𝑅
= 𝐼
8.59𝑉
510 Ω
= 0. 0168 𝐴 = 16. 8 𝑚𝐴
● Subtract the voltage of the battery from the voltage of the resistor:
𝐵
𝑉
− 𝑅
𝑉
= 𝐵
𝑅𝑉
8. 97 𝑉 − 8. 59 𝑉 = 0. 38 𝑉
● Now, we have the current and the voltage on the internal resistance, so we can calculate the
value of the internal resistor:
𝑉
𝐼
= 𝐼
𝐵𝑅
0.38 𝑉
0.0168 𝐴
= 22. 62 Ω
8.7 Testing Some Components Using Multimeter
In this section, we are going to test some components using a multimeter.
8.7.1 Potentiometer Test
First, we need to measure the resistance between A - C.
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Mastering the Art of Measurement (DM401B Smart Digital Multimeter) r.01 www.plusivo.com