Uses of Magnets (Leaving Cert Physics): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What type of magnet is commonly used in fridge magnets?
What type of magnet is commonly used in fridge magnets?
Permanent magnet
Why are household magnets designed to have limited strength?
Why are household magnets designed to have limited strength?
To be safe around children & electronics
What do MRI machines use to create medical images?
What do MRI machines use to create medical images?
Extremely strong electromagnets
Which atoms in the body do MRI magnetic fields align?
Which atoms in the body do MRI magnetic fields align?
Hydrogen atoms
How does a magnetic compass work?
How does a magnetic compass work?
Needle aligns with Earth's magnetic field
What generates Earth's magnetic field?
What generates Earth's magnetic field?
Molten iron in outer core
What advantage do maglev trains gain from electromagnets?
What advantage do maglev trains gain from electromagnets?
Eliminate friction for high speeds
How do metal detectors identify metallic objects?
How do metal detectors identify metallic objects?
Metal disturbs the magnetic field
Why are electromagnets preferred over permanent magnets in scrapyards?
Why are electromagnets preferred over permanent magnets in scrapyards?
They can be switched on and off
How do hard drives store digital information?
How do hard drives store digital information?
Magnetising areas in different directions
What is the difference between motors and generators?
What is the difference between motors and generators?
Motors make motion, generators make electricity
What fundamental principle applies to all magnetic poles?
What fundamental principle applies to all magnetic poles?
They always occur in pairs