Summary Notes AQA A-level Physics: Magnetic Fields

Magnetic Field

region of
A
sparentwhere moving charge
can




~into the of the
Solenoid -
a coil ofa wire ⑪ page
p-oyge
When current flows in a
wire, a

field induced around
magnetic
is


the wire.




Motor effect
mean

-
When external
interacting with
an



magnetic field,
the will experience
wire force. a


I will force if the current
only experience a



perpendicular field
through is
it to the likes




Fleming's Left-Hand Rule
~ -




B flux
(magnetic density) -



magnetic
field
strength
ITesla (IT) the field strength that force of
produces a
=




magnetic
IN currentof 1 A
carrying in im wire
a a


flux density ength
of
↑ ~number I

tut
1:

F BIL
=




sinQ Itesla-

I current
.

, -

Magnetic flux
density
The force length a
acting per current
unit per unit on



current-carrying conductor placed perpendicular to the

field.
magnetic
Experiment:




~to alter the
current




Convertmass force
reading into (F-mg)
FUs I current)
Plot
·F BIL =)
gradient BL, B dent
= =
=