Calculatorism

Kirchhoff's Voltage Law Calculator

Compute currents and voltage drops in a series circuit (KVL).

Input Data

Source Voltage V
V
R1Ohm
Ω
R2Ohm
Ω
R3Ohm
Ω

Results

I = V/ΣR.
1A
R₁+R₂+R₃.
12Ω
I·R₁.
2V
I·R₂.
4V
I·R₃.
6V
Unused voltage.
0V

At a glance:ΣV drops = V_source (KVL); I = V/(R₁+R₂+R₃). Complements ohm's-law and voltage-divider.

Formula

I = V / (R₁+R₂+R₃).

$$\sum_{i} V_i = 0, \quad V_{source} = V_1 + V_2 + V_3$$
$$I = \frac{V_{source}}{R_1 + R_2 + R_3}, \quad V_i = I R_i$$

How to Use

  1. Enter source and three resistors.
  2. The tool returns current and drops.

Case Studies

V=12, R=2,4,6

I=1 A, drops 2,4,6 V.

FAQ

KVL meaning?

Sum of voltage changes around a loop is zero.

Related Tools

References

Content review: Calculatorism Science Team. Results are for reference only; please refer to the relevant authorities for the official figures.

Found a problem with the results?

If this calculator's result is wrong, or you have any question about the calculation logic, please let us know. You are viewing:Kirchhoff's Voltage Law Calculator（/physics/kirchhoff-voltage）。