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🔸 Demonstrate through an activity how eddy currents can be reduced in conductors, and what do you conclude from this activity?
🔸 What are the disadvantages of eddy currents, and how can losses caused by eddy currents be reduced?
🔹 Explain how eddy currents are utilized in the brakes of some modern trains.
🔹 State some applications in which eddy currents are utilized, explaining one of them.
🔹 How can the amount of dissipated energy caused by eddy currents in the iron core of coils or transformers be reduced?
🔸 How can the amount of dissipated energy caused by eddy currents in an iron core of coils be reduced?
🔹 State the practical applications in which eddy currents are utilized.
🔹 Can energy losses caused by eddy currents generated in the iron core of coils or transformers be reduced? Explain how.
What happens and why, if a copper plate is pulled horizontally between the poles of an electromagnet with a uniform magnetic flux density?
🔹 In most coils, why is the core made of parallel plates of soft iron that are electrically insulated from one another and tightly pressed together, instead of using a solid single-piece iron core? What is the practical benefit of this?
🔸 وضح بنشاط كيفية تقليل التيارات الدوامة في الموصلات؟ وماذا تستنتج من هذا النشاط؟
🔹 ما مضار التيارات الدوامة؟ وكيف يمكن تقليل خسائر التيارات الدوامة؟
🔸 وضح كيف تستثمر التيارات الدوامة في مكابح بعض القطارات الحديثة؟
