4.10 - Applications in Daily Life
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 does energy efficiency mean?
💡 Hint: Think about how to reduce energy bills.
Why is it essential to know the power rating of an appliance?
💡 Hint: Think about comparing devices.
4 more questions available
Interactive Quizzes
Quick quizzes to reinforce your learning
What is the primary benefit of energy-efficient devices?
💡 Hint: Think about what efficient means.
True or False: A higher wattage rating means an appliance is more energy-efficient.
💡 Hint: Ask yourself the difference between wattage and efficiency.
2 more questions available
Challenge Problems
Push your limits with advanced challenges
You have three appliances: one uses 1000W, another 700W, and the last 400W. If you run them all for 5 hours a day, calculate the total energy consumed in kWh for a month.
💡 Hint: Add the wattages, multiply by hours and days, and convert to kWh.
Your energy bill is $45 for 300 kWh consumed. If you switch to energy-efficient devices and reduce usage by 20%, how much will your new bill be?
💡 Hint: Calculate the reduced consumption first, then find the new cost.
Get performance evaluation
Reference links
Supplementary resources to enhance your learning experience.