Magnets and Electromagnetism

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P7 - Magnets and Electromagnetism
Ebony Scarlet
Mind Map by Ebony Scarlet, updated more than 1 year ago
Ebony Scarlet
Created by Ebony Scarlet about 7 years ago
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Resource summary

Magnets and Electromagnetism
  1. Magnets
    1. Produce a magnetic field
      1. Region where other magnets or magnetic materials experience a non-contact force
        1. Iron, steel, cobalt, nickel
          1. Force is always attractive between magnet and magnetic material
      2. Two poles - north and south
        1. Two poles of a magnet near each other, exert a force
          1. Attractive or repulsive
            1. Two poles same - repel
              1. Two different poles - attract
          2. Magnetic field from north to south
            1. Closer together - stronger Further apart - weaker
              1. Stronger at poles of a magnet
              2. Two types of magnets
                1. Permanent magnets
                  1. Produce own magnetic field
                  2. Induced magnets
                    1. Magnetic materials turned into magnets when put in a magnetic field
                    2. Force is always attractive
                  3. Electromagnetism
                    1. Solenoids
                      1. Coils make magnet stronger
                        1. More coils means stronger
                          1. Less coils means weaker
                        2. Permanent Magnets
                          1. Have an electromagnetic field all the time
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