Electrical energy and electrical power

4.2.5

What the syllabus asks of you

Understand that electric circuits transfer energy from a source of electrical energy, such as an electrical cell or mains supply, to the circuit components and then into the surroundings
Recall and use the equation for electrical power P = IV
Recall and use the equation for electrical energy E = IVt
Define the kilowatt-hour (kW h) and calculate the cost of using electrical appliances where the energy unit is the kW h

Read the notes first

Chapter 4: Uses of electricity

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Every question on Electrical energy and electrical power, untimed, marked as you go.

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