Magnetism & electromagnetism (p2)
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19 Terms
Magnet
Any material/ object that produces a magnetic field
What do field lines show and their directions
Shows:
if attracts or repels
Strength of a magnet at a particular point
How do you find poles and field lines
Interaction between two magnets: repel
Interaction between two magnets: attract
Magnetic material
Magnetic elements
Permanent magnets vs induced magnets
Magnetically soft materials vs magnetically hard materials
Soft- materials that lose their magnetism really quickly = nickel & iron
Hard- materials that lose their magnetism really slowly= steel
How to use right hand rule on a straight wire
How do field lines work on a circular coil
Magnetic fields in and out of a solenoid
How to increase strength of a solenoid
What is the motor effect and how to create a full force
To create full force wire needs to be 90 degrees (parallel) to the magnetic field
If wire is at slight angle- Less force
Wire is same direction to magnetic field- no force
How do you find direction of force
Left hand rule in a horseshoe magnet
How does electric motor work
How to fix the electric motor from going back and forth and just going in one direction
Use split ring commutator
How to increase speed of rotation in a split ring commutator
Note 
Flashcards (20)