Unit 4 Worksheet Flashcards
1
Q
What is a magnet
A
material that attracts iron and nickel
2
Q
3 classifications of magnets
A
Natural
Artificial
Electromagnets
3
Q
Magnetic field strength is measured in
A
Gauss or Tesla
4
Q
Magnetic Induction
A
When a magnetic element is brought into the field of a permanent magnet, it’s domains will align with the magnet. It will unalign when permanent magnetic is removed
5
Q
What happens to a magnetic field when and iron core is introduced
A
increases the strength of the magnetic field
6
Q
What 3 factors affect the strength of the magnetic field in an electromagnet
A
# turns in a coil Current Permeability of core (material and type used)
7
Q
Electromagnetic induction
A
the generation of electric current using a magnetic field
8
Q
What device in an xray circuit works on the principle of EM induction
A
Autotransformer, step up, step down transformer
