Practice - Core
Practice Questions
Test your understanding with targeted questions
What is the SI unit for magnetic flux?
💡 Hint: It’s named after a famous physicist.
Define magnetomotive force (MMF).
💡 Hint: Think of it as the voltage in electrical circuits.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is the unit of magnetic flux density?
💡 Hint: Think of how strong the magnetic field is.
True or False: Hard magnetic materials can easily magnetize and demagnetize.
💡 Hint: Remember the characteristics of soft vs. hard magnets.
1 more question available
Challenge Problems
Push your limits with advanced challenges
A magnetic core has a length of 0.5 m, a cross-sectional area of 0.01 m², and a relative permeability of 1000. Calculate the reluctance and MMF needed for a magnetic flux of 0.1 Wb through this core.
💡 Hint: Use the formulas for reluctance and MMF.
Compare the energy loss in hysteresis for a soft and hard magnetic material given a constant magnetic cycle. Use different areas of the B-H curves to illustrate your point.
💡 Hint: Analyze the areas under the B-H curves!
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Reference links
Supplementary resources to enhance your learning experience.