Engineering
Current Divider Calculator
Calculate branch current in parallel resistor circuits using current divider rule.
Frequently Asked Questions
What is current divider?
In parallel resistors, total current divides inversely proportional to resistance. Lower resistance gets more current. Formula: I1 = Itotal × R2/(R1+R2).
How does current split in parallel?
Current takes path of least resistance. Branch current I = Itotal × Req_other / (R + Req_other), where Req_other is equivalent of all other parallel paths.
Why does lower resistance get more current?
Lower resistance provides easier path. By Ohm's law, I = V/R; same voltage across all branches, so lower R = higher I.
How do I apply current divider with 3+ resistors?
Find equivalent of all other parallel resistors, then use two-resistor formula. Repeat for each branch.
Is voltage same across parallel resistors?
Yes. Voltage is identical across all parallel branches. Current adjusts based on resistance.