Physics

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Electricity and Magnetism 3

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  • 1. Multiple-choice
    1 minute
    1 pt
    The magnetic field of an electromagnet can be increased by 
    changing the direction of the current.
    decreasing the current.
    increasing the number of coils. 
    decreasing the number of coils. 
  • 2. Multiple-choice
    1 minute
    1 pt
    Image
    What does this illustration represent? 
    magnetic material that is not magnetized
    magnetic material that is magnetized
    non-magnetic material
    arrangements of atoms in a domain
  • 3. Multiple-choice
    1 minute
    1 pt
    Image
    In this illustration, the magnetic field is strongest ___. 
    near either pole
    near the north pole
    near the south pole
    halfway between the poles
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