Current Divider Calculator
Current Divider Calculator
| Quantity | Value |
|---|---|
| Source Current (Is) | 1.000 A |
| Resistor R1 | 100 Ω |
| Resistor R2 | 300 Ω |
| Current Through R1 | 0.750 A |
| Current Through R2 | 0.250 A |
| Voltage Across Pair | 75.000 V |
| Check (I1 + I2) | 1.000 A = Is ✓ |
Current Split
Split sums to 100% of source current
About the Current Divider Calculator
The current divider rule finds the current in each branch of a parallel circuit without solving the full network. For two parallel resistors, I1 = Is × R2 ÷ (R1 + R2). The voltage across the pair is V = Is × (R1·R2 ÷ (R1 + R2)), the equivalent parallel resistance times the source current.
Why Current Divides Inversely
Because every branch shares the same voltage, Ohm's law dictates that lower resistance draws more current. Doubling R1 while holding R2 fixed shifts a larger share of the source current into R2 — the divider is exactly the resistance ratio inverted.
Frequently Asked Questions
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