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Electric Current

Levels are CK-12's student achievement levels.
Basic Students matched to this level have a partial mastery of prerequisite knowledge and skills fundamental for proficient work.
At Grade (Proficient) Students matched to this level have demonstrated competency over challenging subject matter, including subject matter knowledge, application of such knowledge to real-world situations, and analytical skills appropriate to subject matter.
Advanced Students matched to this level are ready for material that requires superior performance and mastery.
  • Real World Application
    Battery in Your Ear

    Battery in Your Ear

    by CK-12 //basic

    Learn how structures in the human ear act like a tiny battery, the role this battery plays in hearing, and other ways it might be used.

  • Real World Application
    Human Generator

    Human Generator

    by CK-12 //basic

    Find out how a bicycle can be used to generate electricity and how practical it would be to generate electricity this way.

  • Real World Application
    Shawn's Story

    Shawn's Story

    by CK-12 //basic

    Learn how a man named Shawn Miller barely survived accidental contact with high-power electric lines and what you can do to stay safe around electric lines.

  • Real World Application
    Transforming Your Life

    Transforming Your Life

    by CK-12 //basic

    Learn how devices called transformers change the voltage of electricity in your home and in electronics chargers so the electricity doesn't "fry" the circuits.

  • Real World Application
    A Dangerous Myth about Electricity

    A Dangerous Myth about Electricity

    by CK-12 //basic

    Find out whether wearing rubber-soled shoes would really protect you from electricity if you accidentally touch an electric line or are struck by lightning.

  • Real World Application
    How Can You Resist?

    How Can You Resist?

    by CK-12 //basic

    Discover what resistors are, how they work, and how to use Ohm's law to find the size of resistor needed for a particular device.

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