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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is power in physics?
💡 Hint: Think about the relationship between work and time.
Question 2
Easy
How do you calculate average power?
💡 Hint: Look for formulas involving work and time.
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What is the SI unit of power?
- Joule
- Watt
- Newton
💡 Hint: Consider the definition of power.
Question 2
Efficiency can never exceed 100%.
- True
- False
💡 Hint: Think about energy conservation.
Solve 2 more questions and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
A generator does 800 J of work in 4 seconds. Calculate the power output and compare it with a generator that does 1200 J of work in 6 seconds.
💡 Hint: Use the formula P = W/Δt to find the power for each generator.
Question 2
An engine's input energy is 5000 J. It converts 1500 J into useful work. Calculate the efficiency and determine the implications.
💡 Hint: Use the formula η = (E_useful / E_input) × 100%.
Challenge and get performance evaluation