2. 2.1 DEFINITIONS
An ideal source is a source that
can provide an arbitrary amount
of energy.
Ideal sources: Voltage sources
Current sources

3. Various representations of an electrical system
Ideal voltage sources
Figure 2.1
Figure 2.1, 2.2
Various representations of an electrical system
Figure 2.2
2-1

4. Symbol for ideal current source
Figure 2.3
Figure 2.3, 2.4
Symbols for dependent sources
Figure 2.4
2-2

5. Definitions of node and supernode
Figure 2.5
Definition of a branch
Any portion of a circuit
with two terminals
connected to it
Figure 2.5, 2.6
A node: The junction of
two or more branches.
A supernode is obtained by defining a region that encloses more than one node
Figure 2.6
Definitions of node and supernode
2-3

6. Definition of a loop Definition of a mesh 2-4 Figure 2.7 Figure 2.8 XX
A loop is any closed
connection of branches
Definition of a mesh
Figure 2.8
A mesh is a loop that
does not contain other
loops
2-4 XX

8. 2-6 The Units of current are called amperes (A =coulomb/s)
Figure 2.15, 2.20
2-6

9. 2-7

10. -
2-8

11. Figure 2.32, 2.33
2-9

12. 2-10

13. 2-11

14. 2-12

15. 2-13

16. Figure 2.48
2-14

17. 2-15

18. 2-16

24. (Va = 0)

27. V=IR Ohm’s law
R=ρ(l/A); ρ:resistivity, l:length, A: area
R=l/σA; σ: conductivity; l:length, A: area

32. Please see the definition on page 49

48. Please see the definition on page 62 (i.e, LO5)

49. Please see the definition on page 62 (i.e, LO5)

50. Please see the definition on page 63 (i.e, LO5)