Why does coiling a wire increase the strength of the magnetic

>>9031817
If you just have a wire, and apply pressure to the top, it will bend easily. However, if you coil that wire you will get a spring, which is much stronger as it is harder to deform. So it only makes sense that a magnetic field from a spring would be greater than that of a wire, as the spring is stronger than the wire

>>9031817
electromagnetic field satisfies superposition
a ring of current produces a magnetic field aligned with the axis of the ring
by stacking a bunch of rings together, you add the fields
coiling the wire is pretty much like stacking a bunch of rings up

>>9031968
This sounds like what I am asking but what the fuck is >>9031841 talking about it?

>>9031968
Do cylinders make super strong fields?

>>9032089
Depends on the material and the dimension, but a coil is better because it generates a high maganetic field inside the coil, but a cylinder's surface is where the magnetic field is higher.

Another question to keep this thread. How are ammeters calibrated? By this, do they aproximate the magnetic field of the magnet and the one in the coils to get a good measurement.

>>9032089
As long as the current is going around the cylinder, you will get a strong field along the axis of the cylinder. If it's going down the cylinder, it acts like a wire and the magnetic field curls around the cylinder.

>>9032152
also in the second case there would be no magnetic field inside the cylinder, only outside.

>>9032155
By ampere's law, you are wrong.

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A wire with a current has a very weak magnetic field with a direction perpendicular to the wire.

Imagine you had 10 wires in a row, the magnetic fields would be added to each other resulting in a stronger magnetic field.

Now imagine instead of 10 wires in a row, each with separate circuits, you have the same wire looped 10 times. It is just more practical.

Wrapping it around a magnetic conductor can extend the magnetic field and direct the magnetic field generated by the entire length of the wire looped around it to a smaller area.

>>9032161
I am assuming a hollow conducting cylinder. Maybe that's more properly called a tube. Yes, if their was conductive material inside the cylinder then a current could flow for a magnetic field to curl around.

>A wire with a current has a very weak magnetic field with a direction perpendicular to the wire.
wrong. the field is in a plane perpendicular to the wire, however the field circles around the wire, not radiating our from the wire.

>>9032109
Bumping this

>>9032096
>>9032152
Thanks yo