This tool calculates the current through a voltage divider network consisting of any number of resistors.

Enter

**Voltage**(Vin)**Resistance**(R1, R2, R3, etc.)

**Formula**

Using Ohm’s Law, the total current is given by

**I _{total} = Vin/(R1+R2+R3+…)**

**Example Calculation**

If R1= 1 ohm, R2 = 1.75 ohm, R3 = 2.25 ohm and Vin = 5 Volt, the total current is 1 Amp.

## Calculating Current Through a Voltage Divider Network

A **voltage divider** is a circuit that divides input voltage into smaller voltages across two or more resistors in series. While it’s commonly used to calculate output voltage, you can also determine the **current** flowing through the entire network.

**Key Concept**

In a voltage divider network, the **current** through the resistors is the same because they are connected in series. The total current is determined by the total resistance and the input voltage.

The steps to calculate the current are:

### 1. **Determine the Total Resistance**

In a series circuit, the total resistance R_total is the sum of the individual resistances:

**R_total = R1 + R2 + … + Rn**

Where R_1, R_2, etc., are the resistances of the individual resistors in the divider.

### 2. **Apply Ohm’s Law**

Once you have the total resistance, use **Ohm’s Law** to calculate the total current:

**I = V_in/R_total**

Where:

- I is the current through the circuit,
- V_in is the input voltage across the entire resistor network,
- R_total is the total resistance.

**Important Considerations**

- The
**current is the same**through each resistor in a series circuit. - Voltage dividers are typically used to
**reduce voltage**rather than current, but knowing the current is essential for power calculations or when adding load resistors.

**Related Calculators**

Use these calculators to find the voltage drop across each resistor when there are: