- #1
MinnesotaState
- 30
- 0
0:30
"So if I have a magnetic field that's increasing increasing increasing"
I'm probably taking this too literal, but the magnetic field coming from the neo magnet isn't increasing or decreasing. The gentleman is only moving the magnetic field (the magnet) in closer proximity to the coil, so the intensity increases relative to the coil's position.
0:36
"current's going to flow in the loop to fight that change"
What defines initial direction of current flow? Polarity of the magnet relative to the coil's position? Perhaps position of coil is irrelevant?
I've been watching the galvanometer. When you move a magnet into a coil, you need to move it back. This is why the needle jumps from + to -. That's AC correct? How do you generate DC? Keep the magnet in a single position & turn it one direction & one direction only?
Frequency = # of oscillations per second. If I were to build one of these at home, I don't think I could get the needle to jump +6v to -6v every time. I'm sure this happens in generators. How do you smooth it out? Does it even matter? & wouldn't this have an affect on Frequency? Just assume the needled jumped from +6v to -4v. I'm sure it'd take a shorter amount of time for the needle to move from -4v back to 0 vs the time it took to go from 0 to +6v
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