Which of the following is true of compasses

Hello. The question is incomplete. The full question is:

"Which of the following is true of compasses?  a. compass magnets can only be deflected by electromagnets such as earth''s magnetic field  b. compass magnets can be deflected by earth''s magnetic field or other permanent magnets  c. compasses always point toward geographic north  d. compasses detect fluctuations in convection in the matle"

b. compass magnets can be deflected by earth''s magnetic field or other permanent magnets

Explanation:

The compass is an object used for geographic orientation. Its construction took place with reference to the compass rose, which is composed of cardinal, collateral and sub-collateral points. It is an object with a magnetic needle that is attracted to the Earth's magnetic pole.

The object is composed of a transparent material box, called a capsule, inside it there is a metallic piece called a needle. The needle is balanced on an axis that has free movement. This magnetized needle always points towards the Earth's magnetic north pole. This is due to the large amount of molten iron inside the Earth, which functions as a magnet and attracts the magnetized needle of the compass.

In summary, we can say that the compass magnets can be deflected by the earth's magnetic field or by other permanent magnets.

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explanation: