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Summary Physics Electricity Notes - GCSE, A-Level, Unviersity,

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Course
Aeronautical engineering

Institution
University Of East London (UEL)

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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Uploaded on October 10, 2023
Number of pages 4
Written in 2023/2024
Type Summary

electricity
current
mean drift velocity
a level
physics
biology
chemistry
engineering
charge
elementary charges
electrons
potential difference
gcse
electrical
univeristy
college
science

Institution
University of East London (UEL)
Education Unknown
Course
Aeronautical engineering

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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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