112 Practical MATLAB® Applications for Engineers
Observe that indeed
III
R
RR
I
R
RR
TT IT
(^12)
2
12
1
12
(KCL)
R.2.53 An applied voltage VT across a series connection consisting of two resistors R 1 and
R 2 divides the voltage VT into two voltage drops V 1 and V 2 as indicated in Fig ure 2.6.
Each voltage is a function of R 1 , R 2 , and VT referred to as the voltage divider rule given
by the following relation:
V
R
RR
1 1 VT
12
V
R
RR
2 2 VT
12
where indeed VT = V 1 + V 2 =
R 1
_______
R 1 + R 2
VT +
R 2
_______
R 1 + R 2
VT (KVL)
FIGURE 2.5
Current divider network.
IT I 1 I 2
R 1 R 2
FIGURE 2.6
Voltage divider network.
VT
R 1 V 1
V 2
R 2