Now, let us measure the current using the multimeter to compare it with our calculations.
The measured current in this figure is 242 mA.
But there is a tolerance for the resistor, let us measure the resistor.
The measured resistance in this figure is 8.2 Ω.
If we calculate it again using Ohm’s law ” “
𝑉 = 𝐼 · 𝑅
1. 88 𝑉 = 𝐼 · 8. 2 Ω
𝐼 =
1.88 𝑉
8.2 Ω
= 0. 229 𝐴 = 229 𝑚𝐴
So, we can count on this way to measure the current, 229 mA is near the value 242 mA.
33
Mastering the Art of Measurement (DM301B Digital Multimeter) r.01 www.plusivo.com
To Next Page
Loading...
