# How to Calculate the Voltage Across an Inductor

To calculate the voltage across an inductor, the formula is:

All you have to know to calculate the voltage across the inductor is **L**, the Inductance of the Inductor
which is expressed in units, Henry, and the derivative of the current going through the inductor.

**Example**

If the current going through the inductor is 7sin(1000t) and its inductance is 50μH, what is the voltage across the
inductor?

To use our calculator which calculates the voltage of across an inductor, see our
Inductor Voltage Calculator.

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