# How to Calculate the Voltage of 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?

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