PDF Notes: Physicis

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    What causes magnetic forces between poles?

    Forces arise from the interaction of magnetic fields.

    What are the two types of magnetic poles?

    North and south poles exist in every magnet.

    How do like poles interact?

    They repel each other.

    What happens when opposite poles are near each other?

    They attract each other.

    What is a non-contact force in magnetism?

    The attraction or repulsion between magnetic poles.

    What is a common use of permanent magnets?

    Compasses utilize them for navigation.

    How do electromagnets differ from permanent magnets?

    Electromagnets require an electric current to generate a magnetic field.

    What is one application of electromagnets in hospitals?

    MRI scanners use them to create images of organs.

    What materials are typically magnetic?

    Iron, cobalt, nickel, and steel are magnetic.

    What defines a magnetic material?

    It is attracted to a magnet.

    What happens to an induced magnet when removed from a magnetic field?

    It quickly loses its magnetism.

    What is the strongest part of a magnetic field?

    The poles of the magnet.

    How do magnetic field lines indicate strength?

    Closer lines represent a stronger magnetic field.

    What direction do magnetic field lines point?

    From the north pole to the south pole.

    What is the effect of distance on magnetic field strength?

    Field strength decreases as distance increases.