Practice - Electric Power and Energy in Circuits
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Practice Questions
Test your understanding with targeted questions
What is the formula for calculating electric power?
💡 Hint: Think about the letters that represent power, voltage, and current.
Express electrical energy in terms of power and time.
💡 Hint: Consider how energy is connected to time and power.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is the formula used to calculate electric power?
💡 Hint: Remember the basic components that make up power.
True or False: Electric energy can be measured in kilowatt-hours.
💡 Hint: Think about how energy consumption is billed in households.
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Challenge Problems
Push your limits with advanced challenges
A device rated at 1500 W is used for five hours a day. Calculate the total energy consumption in kWh for a month.
💡 Hint: Remember to calculate daily energy consumption before multiplying by the number of days.
In a circuit, a lamp consumes 60 W when the voltage is 120 V. What is the current flowing through the lamp?
💡 Hint: Use the power formula and remember to solve for current by rearranging the equation.
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Reference links
Supplementary resources to enhance your learning experience.