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Results tagged with magnet
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user 77938
2
votes
Why can't we use magnets to create energy like this?
The way it's drawn, if you rotate clockwise around 120 degrees, you will have a North pole on the rotor next to a South on the static magnet, and the South on the rotor next to the North on the static … magnet. …
- 20k
2
votes
Accepted
Why is the magnetic field around a bar magnet represented by iron filings?
The bar magnet, on the other hand, is much bigger and strongly magnetised. So we assume that the iron filings have only a small effect on the field that they are measuring. … Dump a whole jar full of them on top of the magnet, and you probably have completely changed the field you were measuring. …
- 20k
1
vote
How do I know that enamelled wire is actually conducting the current?
The traditional 19th century method is to get a compass. Away from your apparatus, it will point to magnetic north. Any magnetic field will deflect the needle.
But your iron core may already be slig …
- 20k