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 practice test.
Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is self-inductance?
💡 Hint: Think about how a coil reacts when you change the current running through it.
Question 2
Easy
Write the formula for mutual inductance.
💡 Hint: Consider what happens when current changes in one coil.
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 self-inductance?
- A property that increases current
- Opposition to change in current
- A type of resistance
💡 Hint: Think about what happens when you try to change the conditions in a coil.
Question 2
True or False: Mutual inductance can only occur between two identical coils.
- True
- False
💡 Hint: Remember that coils only need to be close enough.
Solve 2 more questions and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Calculate the induced emf in a coil with an inductance of 5 H if the current changes from 3 A to 0 A in 2 seconds.
💡 Hint: Make sure to convert your change in current correctly!
Question 2
A transformer has a primary coil with 100 turns and a secondary coil with 50 turns. If the primary current changes at 2 A/s, what is the induced emf in the secondary coil, assuming mutual inductance M = 1.2 H?
💡 Hint: You only need to apply the formula for mutual inductance.
Challenge and get performance evaluation