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Magnetism (Magnetic fields (All magnets have a field of varying strength,…

- - - - The strength of a magnetic field produced by a solenoid can be increased by: using a larger current, using more turns of wire, putting some iron into the middle of the solenoid
    - - This is used to predict the direction in which a straight conductor moves in a magnetic field.
      - Spread out the first two fingers + thumb of left hand so that they are at right angles with each other. Let your first finger point along the direction of the current. Your thumb will then point in the direction that the wire moves. This works when the field and the current are at right angles