Practice - Electric Power and Energy
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Practice Questions
Test your understanding with targeted questions
What is the SI unit of power?
💡 Hint: Think about the unit related to energy consumption per time.
If an appliance operates at 100 W for 1 hour, how much energy does it consume?
💡 Hint: Use the formula E = Pt with time in hours.
4 more questions available
Interactive Quizzes
Quick quizzes to reinforce your learning
What is electric power measured in?
💡 Hint: Think of the unit for power.
Electric energy is calculated as power multiplied by what?
💡 Hint: Remember the formula E = Pt.
2 more questions available
Challenge Problems
Push your limits with advanced challenges
A 2000 W electric kettle takes 10 minutes to boil water. How much energy is consumed in kilojoules?
💡 Hint: Convert time from minutes to seconds to ensure units match.
If a device operates at 500 W for 4 hours, how many kilowatt-hours does it consume?
💡 Hint: Remember to convert hours into Wh for the final answer.
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Reference links
Supplementary resources to enhance your learning experience.