Topic Seven Flashcards
1
Q
What is electromagnetism
A
When a current flowing in a conductor creates a magnetic field
2
Q
What is a poll
A
The place on a magnet with a magnetic forces are the strongest
3
Q
What is magnetic field
A
Area around in magnet where in force acts on another magnet or magnetic material
4
Q
What is an induced magnet
A
Magnet material that becomes a magnet when it is placed in a magnetic field. When removed from the field it quickly loses its magnetism
5
Q
What is a permanent magnet
A
A magnet that produces its own magnetic field
6
Q
What are the magnetic materials
A
Iron, Steel, cobalt, nickel
7
Q
What is a solenoid
A
A couple of why that will create a magnetic field when the current is passed through it
8
Q
What is Electromagnetic
A
A solenoid containing an iron core which increases its strength
