3.12 Magnetism Flashcards
1
Q
Typical materials of Ferromagnets are:
A
Iron, Nickel and Cobalt
2
Q
Typical materials of Paramagnets are:
A
Oxygen, Aluminium and Platinum
3
Q
Typical materials of Diamagnets are:
A
Copper, Gold and Zinc
4
Q
Which magnet has the highest resistance?
A
Diamagnets, which is higher than air
5
Q
Magnetomotive Force total field equation:
A
Total current multiplied by the number of turns
6
Q
SI unit for Magnetomotive Force
A
Amps
7
Q
Magnetic field strength equation:
A
Current divided by the length
8
Q
The stronger the magnetic field, the ……………. the flux density
A
Higher
9
Q
Magnetic Flux Density equation
A
B=Hxµ
H is the magnetic field strength
μ is permeability
10
Q
SI unit for magnetic flux density
A
Tesla