Chapter 20 - Magnetic Fields Flashcards
1
Q
Magnetic Field Strength Is Also Known As:
A
Magnetic flux density
2
Q
Current And Magnetic Field Relationships
A
A current-carrying conductor can produce a magnetic field but only a changing magnetic field can induce a current, not a magnetic field.
3
Q
Energy Linkage
A
= N (dΦ/ dt )
4
Q
Electromagnetic Force Formula
A
BILSin θ ( F is max when current is perpendicular )
5
Q
When I = 1 And θ = 90
A
B = F / L
6
Q
qE = qvB
A
V = E / B , When V > E/B Particle Up , When V < E/B Particle Down
7
Q
Flemmings Left Hand
A
- Force is produced
- Electrical Motor
- Thumb = Force ( F )
- Index = Magnetic Fields ( B )
- Middle = Current ( I )
8
Q
Flemmings Right Hand
A
- Current is induced
- Electrical generator
- Thumb = Force ( F )
- Index = Magnetic Fields ( B )
- Middle = Current ( I )
9
Q
Charge Rule
A
- Thumb =Velocity
- Index = Magnetic Fields ( B )
- Middle = Force
- Left Negative Charge
- Right Positive Charge
10
Q
Right Hand Grip Rule
A
- Concentric Circles
- Thumb - Current
- Field - Fingers
- Vice Versa Applicable
