2.4.4 - Relation Between Power and Energy
Enroll to start learning
You’ve not yet enrolled in this course. Please enroll for free to listen to audio lessons, classroom podcasts and take practice test.
Practice Questions
Test your understanding with targeted questions
What is the unit of power?
💡 Hint: Think of the number of joules used per second.
If a device uses 100 joules of energy in 10 seconds, what is its power?
💡 Hint: Use P = E/t for your calculation.
4 more questions available
Interactive Quizzes
Quick quizzes to reinforce your learning
What is power?
💡 Hint: Think about how quickly tasks are completed in terms of energy.
What is the SI unit of power?
💡 Hint: What unit do we use for measuring energy transfer per unit time?
2 more questions available
Challenge Problems
Push your limits with advanced challenges
If a generator outputs 5000 watts of power, how much energy will it produce in 1 hour?
💡 Hint: Convert one hour into seconds before performing the multiplication.
A car engine performs work at a rate of 700 watts. If it operates for 2 hours, how much energy does it consume?
💡 Hint: Make sure to convert hours into seconds correctly.
Get performance evaluation
Reference links
Supplementary resources to enhance your learning experience.