How to pronounce“capacitor”in English

Because it’s largely why capacitors are so incredibly useful – from defibrillators to electronic components: When a capacitor’s plates store electric charge, they’re actually storing energy!

And that potential energy is actually stored within the electric field between a capacitor’s charged plates.

Mathematically, the displacement current is equal to the change in the capacitor’s charge over time.

To measure potential energy in an electric field, let’s imagine a positive test charge that’s moving between a capacitor’s plates.

This effect carries all the way through, until the last plate of the third capacitor has a negative charge equal and opposite to the first capacitor’s positive plate.

So you can picture the entire set of capacitors as one big equivalent capacitor.