Go to **current divider** calculator.

**Current divider** is actually two resistors connected in parallel.

Now, if we know input current and R_{1} and R_{2} resistor value, we can calculate how input current will split up, i.e. how much are I_{1} and I_{2}. By intuition, if R_{1}=R_{2} then input current is split into two equal halves. But how to obtain exact **current divider formula**? First step is to find voltage drop across the resistors by using Ohm’s law.

Knowing voltage, we can find current through each resistor, again by using Ohm’s law. So **current divider formula** for currents I_{1} and I_{2} are respectively

and

What is interesting is that current through resistor R_{1} is directly proportional to resistor R_{2} value, while current through resistor R_{2} is directly proportional to resistor R_{1} value. It might be confusing at the first glance, but it is quite logical. If neighboring resistor is large, more current will flow through out given resistor and vice versa.

Go to **current divider** calculator.

**External links:**

Current Divider on Wikipedia

Current Divider on Allaboutcircuits

Current Divider on Learningaboutelectronics

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