Practice Energy (W) - 1.3.1.5 | Module 1: Foundations of DC Circuits | Basics of Electrical Engineering
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1.3.1.5 - Energy (W)

Learning

Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

Calculate the energy consumed by a device using 10 Watts for 1 hour.

💡 Hint: Remember 1 hour = 3600 seconds.

Question 2

Easy

What is the energy consumed by a 50 W appliance running for 2 hours?

💡 Hint: Convert hours to seconds.

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 relationship between energy, power and time?

💡 Hint: Think back to the formula W = P × t.

Question 2

Energy is measured in which unit?

  • Watts
  • Joules
  • Amperes

💡 Hint: Recall that energy is work done over time.

Solve 1 more question and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

If an appliance uses 75 W for 5 hours and another 30 W for 12 hours, what is the total energy consumption?

💡 Hint: Calculate each energy use separately before adding them up.

Question 2

An electric kettle uses 1500 W to boil water and takes 10 minutes. If you boil water in 3 different kettles, what is the total energy consumed?

💡 Hint: Compute for one kettle first, then multiply by 3.

Challenge and get performance evaluation