Electrical power

Key Ideas

Power is the rate at which energy is transformed by a circuit component.

Understand Ohm’s Law

    V=IR
    Watts are Joules per second

    Power is measured in Watts

    A kilowatt is 1000 Watts

    A kilowatt-hour is 1000Watts per hour

Lectures

Lecture - Electrical power

Videos

Physics online, Electrical power

Physics online, Fantastic summary to the whole topic

 

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