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Summary Physics Electricity Notes - GCSE, A-Level, Unviersity, £15.49
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Summary Physics Electricity Notes - GCSE, A-Level, Unviersity,
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i have provided an in depth note about electricity that can be used for GCSE Physics, A-Level Physics and even for foundation year university for engineering courses.

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  • October 10, 2023
  • 4
  • 2023/2024
  • Summary

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ELECTRICITY
ELECTRICAL CHARGE Electron
Charge (e)
:
1 6
.
x 10 C




Definition :
A flow rate of
charged particles from one place to another
Number of electrons



Q :

I ne



unit of colomb (C) As Elementary Charge
charge or
-




charge is represented in terms of electron flow


To produce a
charge of 1 colomb you need 1 6x10-19 =
6 . 3x10"
electrons Net
charge
.

,




Charge does flow through material
not
every

-Only conductors allow
charge to flow ,
insulator stops charge from
flowing
To measure how fast charge i
flowing ,
find current




Current :
rate of flow of
charge Change in charge (c) Q
I =
Current (A) :


a
in time (s) B t
change




It is the amount of
charge passing a
given point in a circuit per unit time .




-One ampere (IA) is the same as one coulomb of
marge passing a given point per second (1Cs"(



ELEMENTARY CHARGES The
magnitude of the current in a circuit is
equal to the




·
Charge carrier Charge/c rate of flow of
charge through a circuit .




proton 1 60 .
x 10-19
ELECTRONS
,
electron
Metals containing positive ions and free delocalized electrons
-




frion due to metallic bonding .




-When a potential difference is applied across a conductor (e g .

battery)
Soalium 6x10-19
.

ion 1 .




the electrons drift towards one end of a conductor (from -
to +1

Chloride ion
-
1 .
6x10-19
particles this forms
-


As electrons are charged ,
movement a current



C be free electrons drift (
must ,
or
they wont




:
W
⑧
A
⑧-
- (ni3(
n carrier density
⑧-
=
charge
V
⑧- -
(AL
-


V - - I :
Wrent in conductor
L
- -
W I
· -
- -
> A :
cross sectional area (mil
⑧- >

L of section (m)
length
:




L >
L V diff (ms" (
: mean velocity of electious

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