Practice Work, Power, and Energy in Practical Applications - 4.5 | 4. Work, Power, and Energy | ICSE Class 11 Electricity and Electronics
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4.5 - Work, Power, and Energy in Practical Applications

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Learning

Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

What is the relationship between energy consumption and power rating for appliances?

💡 Hint: Consider what happens when you use more powerful appliances.

Question 2

Easy

What does energy efficiency in household appliances mean?

💡 Hint: Think about how LED bulbs use less energy than incandescent bulbs.

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 power in the context of electrical energy?

  • Rate of energy consumption
  • Amount of energy stored
  • Total energy used

💡 Hint: Remember the definition of power and its relation to work.

Question 2

True or False: High-voltage transmission increases energy loss in cables.

  • True
  • False

💡 Hint: Think about the relationship between voltage and current.

Solve 2 more questions and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

A city uses a 100-mile, 6-inch diameter power line with an average current of 1000 A. Calculate the energy loss if the resistance is 0.1 ohms per mile.

💡 Hint: Use the total resistance to find the energy loss from the current.

Question 2

If a household replaced all its incandescent bulbs with LED bulbs that use 75% less energy, how would this affect their electricity bill over a year assuming they use them for 5 hours daily?

💡 Hint: Compare the kWh used throughout the year between both types.

Challenge and get performance evaluation