6.3 Electromagnetism
, Magnetic fields
Magnetic field lines map magnetic field patterns around magnets and
current conductors
carrying
-
.
•
Arrow / direction of magnetic field is the direction in which a free north
pole would move ( north to south
Equally spaced parallel magnetic field lines represent a uniform magnetic
•
field magnetic flux density is the same throughout the field
-
•
The magnetic field strength is stronger when the magnetic field lines are
closer
together .
Like
poles repel and
opposite poles attract
• .
Current carrying -
conductors
for a current -
carrying wire .
the magnetic field lines are circular centred
,
on the
wire and perpendicular to it .
Direction of magnetic field determined the hand NK where
can be
using right grip
-
the thumb conventional current and the
points in the direction of fingers curve in the
direction of the magnetic field
✓ ✓ ✓ ^ ✓ ✓ ~
• n r n ^
n
og
out of paper into paper
the strength of a
magnetic field is known as
magnetic flux density and
is measured in tesla ( ) t .
When current conductor is placed perpendicular to external
a
carrying an
-
magnetic field ,
the direction of the force can be found using Flemming 's
left -
hand rule .
, Magnetic fields
Magnetic field lines map magnetic field patterns around magnets and
current conductors
carrying
-
.
•
Arrow / direction of magnetic field is the direction in which a free north
pole would move ( north to south
Equally spaced parallel magnetic field lines represent a uniform magnetic
•
field magnetic flux density is the same throughout the field
-
•
The magnetic field strength is stronger when the magnetic field lines are
closer
together .
Like
poles repel and
opposite poles attract
• .
Current carrying -
conductors
for a current -
carrying wire .
the magnetic field lines are circular centred
,
on the
wire and perpendicular to it .
Direction of magnetic field determined the hand NK where
can be
using right grip
-
the thumb conventional current and the
points in the direction of fingers curve in the
direction of the magnetic field
✓ ✓ ✓ ^ ✓ ✓ ~
• n r n ^
n
og
out of paper into paper
the strength of a
magnetic field is known as
magnetic flux density and
is measured in tesla ( ) t .
When current conductor is placed perpendicular to external
a
carrying an
-
magnetic field ,
the direction of the force can be found using Flemming 's
left -
hand rule .
