Enter the primary voltage (volts), the primary current (amps), and the secondary current (amps) into the calculator to determine the Secondary Voltage.

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## Secondary Voltage Formula

The following formula is used to calculate the Secondary Voltage.

**V2 = V1 * I1 / I2**

- Where V2 is the Secondary Voltage (volts)
- V1 is the primary voltage (volts)
- I1 is the primary current (amps)
- I2 is the secondary current (amps)

## How to Calculate Secondary Voltage?

The following example problems outline how to calculate Secondary Voltage.

**Example Problem #1**

- First, determine the primary voltage (volts). In this example, the primary voltage (volts) is determined to be 300 .
- Next, determine the primary current (amps). For this problem, the primary current (amps) is measured to be 2 .
- Next, determine the secondary current (amps). In this case, the secondary current (amps) is found to be 3.
- Finally, calculate the Secondary Voltage using the formula above:

V2 = V1 * I1 / I2

Inserting the values from above and solving the equation yields:

V2 = 300 * 2 / 3 = 200 (volts)

**Example Problem #2**

Using the same method as above, determine the variables required by the equation. For this example problem, these are:

primary voltage (volts) = 500

primary current (amps) = 4

secondary current (amps) = 2

Enter these given values into the calculator or above yields:

V2 = 500 * 4 / 2 = 1000** **(volts)