Plusivo DM401B - Kirchhoffs Law; Kirchhoffs Current Law

If we want to use the current to calculate the power.
The measured current in this figure is 5.58 mA
We can use the first formula which is:
𝑃 = 𝐼 · 𝑉
5. 58 𝑚𝐴 · 3. 087 𝑉 = 0. 0172𝑊 = 17. 2 𝑚𝑊
And the second formula which is:
𝑃 = 𝐼
2
· 𝑅
(5. 58 𝑚𝐴)
2
· 510 Ω = 0. 0159 𝑊 = 15. 9 𝑚𝑊
So all the result of the calculations using the formulas above are near each other’s value: 17.3 mW, 17.2
mW, 15.9 mW
8.3 Kirchhoff's Law
8.3.1 Kirchhoff's Current Law
Currents entering the node equals currents leaving the node.
𝐼
𝐼𝑛1
+ 𝐼
𝐼𝑛2
= 𝐼
𝑂𝑢𝑡1
+ 𝐼
𝑂𝑢𝑡2
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Mastering the Art of Measurement (DM401B Smart Digital Multimeter) r.01 www.plusivo.com