并联电路计算器
计算并联电路的等效电阻和支路电流。
V
Ω
Ω
Ω
Total Resistance
600.00 Ω
Circuit Current0.0200 A
Voltage across R12.000 V
Voltage across R24.000 V
Voltage across R36.000 V
Total Resistance vs Supply Voltage
公式
## Series Circuit Analysis In a series circuit every component carries the same current. Resistances add directly. ### Formulas **R_total = R1 + R2 + R3** **I = V / R_total** **V_Rn = I x Rn** The sum of all voltage drops equals the supply voltage (Kirchhoff's Voltage Law).
计算示例
12 V supply with 100, 200, 300 ohm resistors in series.
- 01R_total = 100 + 200 + 300 = 600 ohms
- 02I = 12 / 600 = 0.02 A
- 03V_R1 = 0.02 x 100 = 2.0 V
- 04V_R2 = 0.02 x 200 = 4.0 V
- 05V_R3 = 0.02 x 300 = 6.0 V
- 06Check: 2 + 4 + 6 = 12 V
常见问题
What happens if one resistor fails open?
The entire circuit breaks and no current flows.
Does resistor order matter?
No. Total resistance and current are the same regardless of order.
How do I handle more than three resistors?
Set R3 to 0 if unused. For more, add values together and enter the sum.
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