Enter the Inductance (h), the change in current (amps), and the change in time (seconds) into the calculator to determine the Inductor Voltage.

## Inductor Voltage Formula

The following formula is used to calculate the Inductor Voltage.

VI = L * di / dt

• Where VI is the Inductor Voltage (volts)
• L is the Inductance (h)
• di is the change in current (amps)
• dt is the change in time (seconds)

## How to Calculate Inductor Voltage?

The following example problems outline how to calculate Inductor Voltage.

Example Problem #1

1. First, determine the Inductance (h). In this example, the Inductance (h) is determined to be 70 .
2. Next, determine the change in current (amps). For this problem, the change in current (amps) is measured to be 14 .
3. Next, determine the change in time (seconds). In this case, the change in time (seconds) is found to be 8.
4. Finally, calculate the Inductor Voltage using the formula above:

VI = L * di / dt

Inserting the values from above and solving the equation yields:

VI = 70 * 14 / 8= 122.5 (volts)

Example Problem #2

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

Inductance (h) = 94

change in current (amps) = 5

change in time (seconds) = 4

Enter these given values into the calculator or above yields:

VI = 94 * 5 / 4 = 117.5 (volts)