Eddy Currents
Mediumphysics
Eddy currents are induced circulating currents leading to:
Select the correct option:
Solution
Incorrect! Answer:
Energy loss heating
When a solid conductor is placed in a changing magnetic field, circulating loops of current are induced throughout the bulk material.
- These are Eddy Currents.
- Because conductors have resistance, these currents dissipate energy as heat (I2R loss).
- To minimize this in transformers and motors, iron cores are laminated (divided into thin sheets insulated from each other) to break up the current paths.
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About This Question
- Subject
- physics
- Chapter
- electromagnetic induction and ac
- Topic
- eddy currents
- Difficulty
- Medium
- Year
- 2025
Solution
Correct Answer:
Energy loss heating
When a solid conductor is placed in a changing magnetic field, circulating loops of current are induced throughout the bulk material.
- These are Eddy Currents.
- Because conductors have resistance, these currents dissipate energy as heat (I2R loss).
- To minimize this in transformers and motors, iron cores are laminated (divided into thin sheets insulated from each other) to break up the current paths.
This medium difficulty physics question is from the chapter electromagnetic induction and ac, covering the topic of eddy currents. It appeared in the 2025 exam.
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