PRACTICAL MATLAB® FOR ENGINEERS PRACTICAL MATLAB

Direct Current and Transient Analysis 111

R.2.51 When two (or more) electrical elements, denoted by A and B, share the same volt-

age, that is, they are connected between the same two points, they are referred to

as connected in parallel, as illustrated in the Figure 2.4.

R.2.52 A current IT divides between two resistances R 1 and R 2 connected in parallel into I 1

and I 2 , the respective currents as indicated in Figure 2.5. Then the branch currents,

I 1 and I 2 , can be expressed in terms of the resistances R 1 , R 2 , and the current IT by

the following relation known as the current divider rule:

IT = I 1 + I 2

I

R

RR

1 2 IT

12



I

R

RR

2 1 IT

12



FIGURE 2.2

An electric loop (KVL).

V 1 + V 2 = V 3 + V 4

+

V 3

−

+

+

+

−

V 2

V (^4) −
−
V 1
FIGURE 2.3
Series connection.
AB
I I
I
FIGURE 2.4
Parallel connection.
ABV