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Question
a compass needle normally points toward earths magnetic pole, which is near the north pole. which best explains why the needle moves away from the pole when it comes close to a current - carrying wire?
current within the wire weakens the magnetic force of the pole.
magnetism surrounding the wire weakens the magnetic force of the pole.
current within the wire draws the needle toward the wire.
magnetism surrounding the wire draws the needle toward the wire.
When there is a current - carrying wire, according to the right - hand rule, there is a magnetic field (magnetism) surrounding the wire. This magnetic field interacts with the compass needle. The Earth's magnetic pole's influence is not weakened in a way described in the first two options. The current in the wire itself does not directly draw the needle (the third option is incorrect). The magnetism (magnetic field) around the current - carrying wire exerts a force on the compass needle, causing it to move.
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Magnetism surrounding the wire draws the needle toward the wire.