Question

The diagram below shows the magnetic field lines of earth in a limited space.
The field lines are parallel and equidistant.
i)Are the magnetic field lines uniform or non-uniform?
ii) Where is the position of the geographic north. A or B?​

Answer 1

1) uniform as all are equidistant and current flows in the same direction

2) a-north pole

Answer 2

i) Uniform

ii) A is the geographic north.

Explanation:

According to the given diagram and information in the question that the field lines are parallel and equidistant then,

i)

the magnetic field lines are uniform i.e. they do not change with respect to the change in position in the region.

ii)

As we know that the magnetic field lines always move from North pole to South pole outside the magnet then according to this principle we have magnetic north pole towards B and south pole towards A and the geographic north is opposite to the magnetic north, hence we've A as geographic north.

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TOPIC: earth's magnetic field

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