If the universe

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had defined magnetic poles, how many light years would they extend?

I'm not sure if there's a way to tell, but the number phi is probably involved somehow

http://www.goldennumber.net/cosmology.htm

Magnetic Poles is a poor concept. Magnetic fields are generated by moving currents and the force lines are closed. The curl of a magnetic field is not zero and the strength of the magnetic field is a function of the current that generates it.

ruveyn

The number of light years distance would be roughly equal to the number of chords of wood that a woodchuck oould chuck - that is if a woodchuck had "defined" wood chucking ability!

Okay-
Maybe there is a way to give the cosmic woodchuck some arbitrary woodchucking ability.
Maybe we can rephrase this question in a less dumb way.

Jupiter and Earth both have magnetic fields. Earth is a more familiar place so we will use the earth as a model.

The question you're really trying to ask is this: if the earth were enlarged to the mass of the entire universe how far would its magnetic field extend if that were enlarged to scale?( ie if you used the entire mass of the universe to make a dynamo for the purpose of magnetism with the same efficiency that nature turns the core of the earth into a magnet -how much magnetism would you get?)

Ofcourse if you made an earth that massive it would collapse into a black hole, and then nothing- niether light nor magnetism would escape the grip of its gravity.

So lets say somehow magically you could stop that much matter from collapsing into a black hole.

So we have this scaled up earth as massive as the whole universe that somehow magically doesnt collapse into a black hole.

An expert could do the math and could calculate how far this body's magnetic field would extend by taking the earth's real magnetic field and extropolating.

I couldnt tell you what the answer would be but it would be - maybe billions of lightyears. But this body's magnetic field might not even extend as far to the boundries of the actual universe as it exists now.

And at any rate magnetic influence travels at the same finite speed that light travels. So it would take billions of years for this body's magnetic field to reach those limits. It might take longer than the age of the Universe for the magnetic field of a universe-massed earth to reach its outer limits.

Magnetic poles are a convenience for talking about short magnets. Magnetic fields consist of closed lines of force surrounding a current. Magnetic fields have no poles. There is no Universal North and Universal South in the Cosmos.

ruveyn