4 electrical power and energy

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Electrical power is defined as the rate at which electrical energy is converted to another form of energy. Power is calculated as the product of current and voltage, and is measured in watts or kilowatts. Electrical energy usage is calculated as power multiplied by time, with energy measured in kilowatt-hours. Appliances like refrigerators that run continuously use more energy over time than devices with intermittent usage.

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More: http://www.pinoybix.org Lesson Objectives: Static Electricity; Electric Charge and Its Conservation Electric Charge in the Atom Insulators and Conductors Induced Charge; the Electroscope Coulomb’s Law Solving Problems Involving Coulomb’s Law and Vectors The Electric Field Field Lines Electric Fields and Conductors Gauss’s Law Electric Forces in Molecular Biology: DNA Structure and Replication Photocopy Machines and Computer Printers Use Electrostatics

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