- #71
Per Oni
- 261
- 1
I want to give example of the strangeness of having 2 different flux cutting laws.
Imagine a horse shoe electromagnet (no permanent magnet) and switch on the current supply. Now approach this magnet with a search coil. During the approach you will be able to see the voltage output of the coil on an oscilloscope. This voltage and its magnitude can be explained using the flux cutting law. No problem here, I’m absolutely fine with that.
Next, keep the coil in place and switch of the current. Depending on the time constant of the electromagnet circuit there will again be a voltage displayed on the scope. But now we not only have to accept that there’s no flux cutting involved but we also have to accept that this field somehow mysteriously disappears. I’m not fine with that at all. (Never was).
@ Q-eerus. I’m sure you can teach me a lot about magnets but again I’d like to talk in a different thread.
Imagine a horse shoe electromagnet (no permanent magnet) and switch on the current supply. Now approach this magnet with a search coil. During the approach you will be able to see the voltage output of the coil on an oscilloscope. This voltage and its magnitude can be explained using the flux cutting law. No problem here, I’m absolutely fine with that.
Next, keep the coil in place and switch of the current. Depending on the time constant of the electromagnet circuit there will again be a voltage displayed on the scope. But now we not only have to accept that there’s no flux cutting involved but we also have to accept that this field somehow mysteriously disappears. I’m not fine with that at all. (Never was).
@ Q-eerus. I’m sure you can teach me a lot about magnets but again I’d like to talk in a different thread.