Professional Courses
Industry-relevant training in Business, Technology, and Design to help professionals and graduates upskill for real-world careers.
Categories
Interactive Games
Fun, engaging games to boost memory, math fluency, typing speed, and English skills—perfect for learners of all ages.
Typing
Memory
Math
English Adventures
Knowledge
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 mock test.
Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What does Joule's law state?
💡 Hint: Remember the formula H = I²Rt.
Question 2
Easy
Name two appliances that utilize the heating effect of electric current.
💡 Hint: Think of appliances that generate heat to perform their function.
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 formula for calculating heat produced in a resistor?
- H = IVt
- H = I²Rt
- H = V/R
💡 Hint: Remember that heat is involved with current and resistance.
Question 2
True or False: Fuses are designed to allow the current to exceed safe limits.
- True
- False
💡 Hint: Think about the safety purpose of a fuse.
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
An electric iron has a resistance of 20 Ω and operates at 240 V. Calculate the power consumed.
💡 Hint: Use the power formula that relates voltage and resistance.
Question 2
How much heat is produced when a 3 A current flows through a 6 Ω resistor for 15 seconds?
💡 Hint: Substitute the values into Joule’s law carefully.
Challenge and get performance evaluation