Exercise
Form 14: Magnetic Induction and Temporary Magnets
In this engaging exercise, students will explore the principles of magnetic induction by creating temporary magnets from various materials, observing the effects of different magnetic fields and understanding how these concepts apply to everyday technology!
Questions
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MultiChoice
What is magnetic induction?
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MultiChoice
Which material is best suited for making a temporary magnet core?
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MultiChoice
Which material retains its magnetism for a long time to make permanent magnets?
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MultiChoice
When North pole of a magnet is brought near an unmagnetized iron nail, what pole is induced at nearest end of nail?
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MultiChoice
What happens to a soft iron nail when external bar magnet is moved far away?
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MultiChoice
What is the ONLY definitive test to prove an object is a permanent magnet?
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MultiChoice
How is a material classified if it magnetizes easily but loses magnetism quickly?
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MultiChoice
Which object will be attracted by induced magnetism when brought near a bar magnet?
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MultiChoice
How can an iron bar be magnetized by stroking?
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MultiChoice
Which method is effective for demagnetizing a steel magnet?
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MultiChoice
What force occurs between a permanent magnet and an unmagnetized piece of iron?
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MultiChoice
What is used to store bar magnets in pairs to prevent demagnetization over time?