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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is self-inductance?
π‘ Hint: Think about how a coil reacts when you change the current running through it.
Question 2
Easy
Write the formula for mutual inductance.
π‘ 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
π‘ 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
π‘ 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.
π‘ 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?
π‘ Hint: You only need to apply the formula for mutual inductance.
Challenge and get performance evaluation