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A magnetic field line shows the direction a compass needle would point

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Q: Best description of a magnetic field line?
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What is the best description of a magnetic field line?

magnetic field line is an imaginary line showing magnetic energy between a north and south pole .


Choose the best description of a magnetic field line.?

A magnetic field line shows the direction a compass needle would point.


Choose the best description of a magnetic field line AMagnetic field lines always point north BA magnetic field line shows the direction a compass needle would point CMagnetic field lines?

From that list, I'll have to go with 'B'.


Do magnetic field line complete loops?

no


How does a tangent at any point on the magnetic field line show the direction of magnetic field at that point?

This is true for any contiguous function, not just magnetic fields.


Is magnetic field line scalar or vector quantity?

Vector.


What is a property of a magnetic field?

One property of a magnetic field is that its divergence is zero. That means that a magnetic field line is always a loop and that the net magnetic field coming out of or going in to an enclosed surface is always zero. The result of this is that there are no magnetic monopoles, at least none discovered. Theories, however, do abound.


What is the invisible force around a magnet called?

Have you ever seen a magnet? Did you see the field? There you go. While you can't see the field itself directly, you can see the effects of the field if you use iron filings or something like that; they'll line up with the magnetic field lines


Earths magnetic field can make a magnet out of an iron bar by causing the magnetic domains to?

Line up in the same direction


Which direction does magnetic fields flow?

I think it is a mistake to refer to magnetic field 'flowing. Magnetic fields just are, they can change, and these disturbances might move in space, but the field itself does not flow. That being said, and assuming you meant to ask in which direction a magnetic field points the answer is that a magnetic field points towards the south pole of a magnet and away from the north pole. A magnetic field cannot be divergent (i.e. there are no sources) and any field line must be closed.


What is inductive current?

Induction: Uses electrical energy to create a magnetic field and the magnetic field restores energy back to the line when it collapses.Electrical Theory, Tom Hernry, pp26


What would happen if field lines crossed?

Then, at some point, the field would go into two directions simultaneously, which doesn't make much sense. The magnetic field lines form continuous closed loops.The tangent to the field line at a point represent the direction of the net magnetic field B,at that point.The magnetic field lines do not intersect,if they did, the direction of the magnetic field would not be unique at the point of intersection.