GCSE Combined Science Physics - supplying electricity

Ma.in a.no. Na.+iona.l 233 20

• Av, a.l+ema:\ing curren+: oscilloscope measures poten+ial difference ~ainst--time
con~an-\-1\f Cnttn9in9 d.i'fecnon,
ea. +ou ea ~n
incf'ea.se or deC'fetaie potential Voltage Voltage


difference
___ I
e:lecl-ricfkt is -rransferred from
power sf-afions fo i..ornes
Time

I II I
'Dv, d.if'ecl- curren+: '30eS in one 'Po+en+i~\ difference 'Po+en-na.\ d.iffe-rence

d.ireclion) cloesno+cnange,~a+ cna.nges , a. wa.\Je
line

, .

' ·· ·· ·· ··,••-
■r~,1 ■■ Jj~I■■
,
.,••,••••
~ 200
C:
100 ■,111
■■ ,111■■
~ , \

~
"O 0 ■■■' ■■1 ■■1■.,
I
•'
-(1J
:;:::: .1oo ■j■■i- ■J■■■ lj t
IJ■■lllj ■■ llllJ
I

C: . '
Jj■■l1JJ■■l1JJI
. (I)



•••••••••
0 -200
a.