Practice - Refrigerators and Heat Pumps
Practice Questions
Test your understanding with targeted questions
Define the Coefficient of Performance (COP).
💡 Hint: Think about its use in refrigerators and heat pumps.
What is the function of a refrigerator?
💡 Hint: Consider what happens to food inside when it’s warm.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What does the Coefficient of Performance (COP) measure?
💡 Hint: Think about how we define efficiency.
True or False? Heat pumps can only cool spaces.
💡 Hint: Recall the dual purpose of heat pumps.
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Challenge Problems
Push your limits with advanced challenges
A refrigerator removes 800 J of heat from food and requires 200 J of work. What is its COP? What would be the COP if the work input increased to 300 J?
💡 Hint: Use COP formula for both scenarios.
Design a simple experiment to test how different temperature settings on a refrigerator affect its COP using a thermometer and a stopwatch.
💡 Hint: Remember to control variables like initial conditions.
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Reference links
Supplementary resources to enhance your learning experience.