Class notes
Electric Circuits
- Course
- Physical Sciences
- Institution
- 12th Grade
Covers the Electric Circuits part of the IEB syllabus with worked examples.
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, Electric Circuits +Definitions :
PO : The work done per unit positive charge
currant : The rate of flow of charge
Ohmis law The current through conductor is
directly proportional to the potential
:
a
difference accross the conductor at constant temperature
EMF :
The total
energy supplied per coulomb
of
charge by the Cell
Worked basic example : Each cell 1 5
=
,
Vi Reading V = 7, 5V
↓
Total resistance :
+
Ri =
+ 2, 67 = 442
A
Reading A : = 1 88
.
GR ·
2
2 , 679 4R Reading V2 I VIR :
1 , 88x 2, 67 = 5,02V
32
Vz
Q flowing through A , in 6 mini
More Complex example . 3405x1, 88 = 676 8 ,
8 1 1
. .
. V = 12r
.1 2
8 . Vz . = Or :5
8 V,= 12x2 5 = 9V ,
Vx = 1,2x4 = 4 82
.
8 2
. . Rate at which Work is done 9 -
4 8 .
= 4 . 2V
Ammeter now 1 , 2A
in R
Power dissipated I=
+ 0 7A
RxP = F R5, 76= (1 2) R
is 5, 76 w = ,
83 , 6
R= 42 1,2 -
0,7 =0 , 5
,5x6
0
=
8 .
46 + 2 4 ,
=
,4
8
5 54 3 =
+ =
= 3,5v +4 = 7, 5
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