Magnets and Magnetic Fields (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
How does magnetic force change with distance from a magnet?
How does magnetic force change with distance from a magnet?
Stronger closer, weaker further away
What defines the direction of a magnetic field at any point?
What defines the direction of a magnetic field at any point?
Direction north pole would feel force
In which direction do magnetic field lines point around a bar magnet?
In which direction do magnetic field lines point around a bar magnet?
Away from north, towards south poles
What does the spacing of magnetic field lines indicate?
What does the spacing of magnetic field lines indicate?
Closer lines mean stronger fields
What property do magnetic field lines never exhibit?
What property do magnetic field lines never exhibit?
They never cross each other
What happens when iron filings are sprinkled around a magnet?
What happens when iron filings are sprinkled around a magnet?
They align along field lines
Who discovered that electric current creates magnetic fields?
Who discovered that electric current creates magnetic fields?
Hans Christian Oersted in 1819
What happens to a compass needle when current direction is reversed?
What happens to a compass needle when current direction is reversed?
Needle deflects opposite direction
In the right-hand grip rule, what does your thumb indicate?
In the right-hand grip rule, what does your thumb indicate?
Direction of conventional current
How does a coil's magnetic field compare to a single loop?
How does a coil's magnetic field compare to a single loop?
Much stronger with same current
What is the magnetic field like inside a solenoid?
What is the magnetic field like inside a solenoid?
Parallel and uniform
What material forms the core of an electromagnet?
What material forms the core of an electromagnet?
Ferrous material like iron