# Electronic – Questions About Inductors

inductor

So I'm still new to electronics, and I've been taking a look at Boost Converters and such (just learning power supplies and the different types)…which got into explaining inductors. Needless to say it was a little bit to take in. Inductors seem quite complex for such a simple component.

1. Just so I have this straight, inductors resist change in current, so if the current is lowering it will "create" a higher voltage to try and make up for this according to Lenz's law. (Is this correct? ….does anyone know how this happens?). When it is creating this voltage is the current being lowered or just drained quicker?

2. In a schematic such as this:

Lets pretend the diode wasn't there. What would happen? Would the inductor just keep building up energy with nowhere to go? Would it just dissipate in the air? In the Wiki article it said it would arc over to the next wire. Is there a limit to how far it can arc (like What if the wires were FAR away: would the inductor melt, or would the energy just dissipate in the air?

3. What determines how much energy an inductor can store? The number of turns? Or does the size of the inductor actually matter as far as "rate" of storage.

4. Unrelated Sort-of, but are there any "cool" experiments I can do with them to just kinda see how they work? I saw this one on youtube essentially he just has a switch that he turns on and off and you can see the voltage jump up super high. Im assuming this is how a boost converter works.

Sorry for the multiple questions, just trying to grasp the magic of inductors. They seem so simple (A coil of wire) but do so many crazy things.