Practice - Ohm's Law for Magnetic Circuits (Hopkinson's Law)
Practice Questions
Test your understanding with targeted questions
Define magnetic flux and its unit.
💡 Hint: Remember the unit of measurement for flux.
What does reluctance measure?
💡 Hint: Think in terms of oppositional forces.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What does Hopkinson’s Law relate in magnetic circuits?
💡 Hint: Consider how voltage relates to magnetic circuits.
Reluctance is analogous to which electrical component?
💡 Hint: Think about how different components interact.
1 more question available
Challenge Problems
Push your limits with advanced challenges
Given a magnetic circuit with a reluctance of 250 AT/Wb and a desired magnetic flux of 2 Wb, calculate the necessary magnetomotive force.
💡 Hint: Start with the formula and plug values in.
If a transformer core's reluctance doubles while maintaining the same flux, how much must the MMF increase to keep the flux constant?
💡 Hint: Consider the direct proportionality of the law.
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Reference links
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