Magnetism
,23rd October 2023
and
Magneric fieldfeeStrength
magnenc Density
B
Symbol is
·
·
Unit =
Tesla (t) or NA'mY
Definition :
unit
magnetic flux density is the
force per unit current per
length
on a
current-carrying wire in a
magnetic field .
They Always :
- ⑳0 from Worth -s South
·
Represent
Have direction
a
stronger find the close
they
are
· =
Vectors /
·
compasses line up with
field lines
.
- A compass North points in same direction as
field Lines .
Electromagnets
·
Most common is a solenoid
coil is diametre
greater length
than
↓
creates a space of a
uniform gidl
.
To
Increase
strength :
·
Increase arrest
no
encrease
of coils
of magnetically soft'
Insert
· iron care
· Recrease diametre
Convential current
-s Direction
>
of
Positive
movement
of positive
charge
negative .
-
, 3D Representation
-Thinke
⑨ of a dot
coming ,
away
from you
.
out
of
the
Page
↓ Inno the
Page
perpendicular to
it
magnetic field
·
Applies no and current .
Permeability
of ability of
the
I the measure a
material to support the
formation
magnetic field
it
of
a within
Increasing electromagnet strength
:
-
soft :on care means :
High permeability
C
· Easier
for magnetic field to be set up in material
· 200 ,
000
of space/air
X
Force field
on a
current-carrying
wire in a
Magnetic
Field :
Uniform Magnetic
·
Magnetic flux density constant
· field lines parallel
field lines
evenly spaced
· .
Effect of increasing distance
magneric flux density reduced
.
Fe on avewcayina
a
-
·
Magnetic field and face are
Always perpendicular to each .
other
,23rd October 2023
and
Magneric fieldfeeStrength
magnenc Density
B
Symbol is
·
·
Unit =
Tesla (t) or NA'mY
Definition :
unit
magnetic flux density is the
force per unit current per
length
on a
current-carrying wire in a
magnetic field .
They Always :
- ⑳0 from Worth -s South
·
Represent
Have direction
a
stronger find the close
they
are
· =
Vectors /
·
compasses line up with
field lines
.
- A compass North points in same direction as
field Lines .
Electromagnets
·
Most common is a solenoid
coil is diametre
greater length
than
↓
creates a space of a
uniform gidl
.
To
Increase
strength :
·
Increase arrest
no
encrease
of coils
of magnetically soft'
Insert
· iron care
· Recrease diametre
Convential current
-s Direction
>
of
Positive
movement
of positive
charge
negative .
-
, 3D Representation
-Thinke
⑨ of a dot
coming ,
away
from you
.
out
of
the
Page
↓ Inno the
Page
perpendicular to
it
magnetic field
·
Applies no and current .
Permeability
of ability of
the
I the measure a
material to support the
formation
magnetic field
it
of
a within
Increasing electromagnet strength
:
-
soft :on care means :
High permeability
C
· Easier
for magnetic field to be set up in material
· 200 ,
000
of space/air
X
Force field
on a
current-carrying
wire in a
Magnetic
Field :
Uniform Magnetic
·
Magnetic flux density constant
· field lines parallel
field lines
evenly spaced
· .
Effect of increasing distance
magneric flux density reduced
.
Fe on avewcayina
a
-
·
Magnetic field and face are
Always perpendicular to each .
other
