Magnetism Flashcards
What do magnetic field lines show?
the volume of space around the magnet in which magnetic forces act and the strength of a magnetic force.
Where does magnetic field flow to and from?
north to south ALWAYS
Pick the correct word:
The closer the fields are to the poles, the stronger / weaker the magnetic field
stronger
What property of magnets could be used to test for magnetism? Which CANNOT be used?
repelling is a test for magnetism. NEVER attraction.
A magnetic field is a region where…
magnetic materials experience a force
Give 3 examples of magnetic materials
crucial:
- iron
- nickel
- cobalt
other:
- steel
In what way can magnetism be induced in magnetic materials?
placing them in a magnetic field. the closer the magnet & the magnetic material get, the stronger the induced magnetism will be
Are magnetic materials hard or soft?
they can be either
What are the characteristics of soft and hard materials?
soft - stick very easily
hard - hold their magnetism
What does an electrical current produce in a conductor?
a magnetic field around it
The larger the electric current…
the stronger the magnetic field
What does the direction of the magnetic field depend on?
the direction of the current
What happens if you uncoil a solenoid?
you will have a straight wire
Solenoid will only have a magnetic field around it if…
there is a current flowing through it
What happens when you coil a wire when making an electromagnet?
the magnetic field becomes more concentrated
