AS Physics OCR B sensing revison guide!

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2 Sensing
Revision Guide for Chapter 2
Contents
Revi
si
on
C heckl
i
st
Revi
si
on
N ot
es
El
ectr
ic
current
and
charge
El
ectr
on
bea m
Pot
en t
ial
di
ff
erence
Conductance and r
esist
ance
Par
a l
l
e l
ci
rcui
t
Ser
ies
circui
t
El
ectr
omo ti
ve for
ce (emf)
I
nter
na l
r
esist
an ce
El
ectr
ical
pow er
Ohm's l
aw
Non ohmic conductor
s
Pot
en t
ial
di
vider
Resol
u t
ion
Sensi
ti
vit
y
Response t
ime
Syst
ema ti
c er
ror
Random va r
iat
ion
Accur
acy and preci
sion
Uncert
aint
y
Cal
ibr
a t
ion
Graphs
Sensor
Summa ry
D i
ag r
ams
Ri
vers
a nd
e l
ectr
ic
current
s
Conductors
in
parall
el
and ser
ies
Ser
ies
a nd
p ar
all
el
river
s
Sources
and
int
ernal
resi
stance
Advancing Physics AS 1

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Page 2

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Sensing
Revision Checklist
Back
to
li
st
of
C ont
ent
s
I can show my understanding of effects, ideas and
relationships by describing and explaining:
h ow
e l
ectri
c currents
are
a fl
ow of
c har
g ed
p art
icl
e s
e.g.…read more

Page 3

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Sensing
t
h e acti
o n
of a pot
e nti
a l
divider
e.g.…read more

Page 4

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Sensing
I can use the following words and phrases accurately:
w i
th ref
e r
en ce t
o el
e ct
ri
c c i
rcuit
s :
emf, potential difference, current, charge,
resistance, conductance, series, parallel, internal resistance, load
Revi
si
on Notes:
el
ectr
ic
curr
ent
and char
ge, pot
ent
ial
di
ff
erence,
conduct
ance and
r
esi
stance,
par
all
el
cir
cuit
,
seri
es
cir
cui
t,
elect
romot
ive
for
ce,
int
ernal
resi…read more

Page 5

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Sensing
curre nts, ci
rcui
t
re si
stance and potent
ial
di
ff
e r
ences in
paral
lel
ci
rcui
ts
usi
ng
the
con d ucta nces
of comp onents
e.g.…read more

Page 6

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Sensing
Revi
si
on
N ot
es:
uncer
tai
nty,
gr
aphs
consi
der
ing
ways
to
reduce
the
lar
gest
sour
ce
of
uncer
tai
nty
in
an
exper
iment
Revi
si
on
N ot
es:
accur
acy
and
preci
si
on,
uncer
tai
nty
I can show an appreciation of the growth and use of
scientific knowledge:
gi
vi
ng
exampl
es
of
and
comment
ing
on
the
appl
icat
ions
of
sensor
s
Revi
si
on
N ot
es:
sensor
Advancing Physics…read more

Page 7

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Sensing
Revision Notes
Back
to
li
st
of
C ont
ent
s
Electric current and charge
El
ect
ri
c cur
rent
i
s char
ge
fl
ow per
uni
t
ti
me:
whereI
is
cu r
rent
and Q i
s t
h e
charge f
low i
n t
ime t.
The
S I
uni
t
o f
el
ectr
ic
current
i
s t
he amp ere
(symbo l
A )
.…read more

Page 8

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Sensing
An
elect
ron beam i
s usual
ly
contr
oll
ed usi
ng el
ectr
ic
an d
ma gneti
c f
iel
ds.
T he
kinet
ic
en er
gy
and
speed of
an el
ectr
on i
n an el
ectr
on beam depend on t
he anode pot
en t
ial
VA as
the work
done
on each el
ectr
on by
the
a node
gives
the
elect
ron i
ts
kinet
ic
energy.…read more

Page 9

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Sensing
Back
to
R evi
si
on
C heckl
i
st
Conductance and resistance
Conductance
is
a me asur
e of
how wel
l
a component
i
n a
cir
cui
t
conduct
s el
ect
ri
ci
ty.
Conduct
ance i
s def
ined
as
The symb ol
f
or
conductance
is
G. The SI
uni
t
of
conductance
is
the
siemens (
symb ol
S),
equi
v al
ent
to A
V
1.…read more

Page 10

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Sensing
Circuit rules:
1.T h e potenti
al
dif
ference acr
oss comp onents
in
parall
el
is
the
sa me for
each comp onent.
2.T h e current
thr
ou gh
a paral
lel
comb i
nati
on i
s equal
to t
he sum of
the curr
ents
through t
he
i
nd ivi
d ual
comp onents.…read more

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