550
12 Electric Circuits
12.51 Apply Kirchhoff’s rules to the circuit shown in Fig. 12.25 to produce three
equations with three unknown branch currents. You do not have to solve
these equations for individual current.
[University of Aberystwyth, Wales 2008]
Fig. 12.25
12.52 (i) State Kirchhoff’s two rules
(ii) Apply Kirchhoff’s rules to the circuit shown in Fig. 12.26 to produce
three equations with three unknown branch currents. You do not have to
solve these equations for individual current.
[University of Aberystwyth, Wales 2007]
Fig. 12.26
12.53 Figure 12.27 shows a series parallel resistive circuit connected to a dc supply.
For the circuit shown work out the following:
(i) The voltages V 1 , V 2 across resistors R 1 and R 2 .
(ii) The voltage V p across resistors R 3 and R 4 .
(iii) The currents I T , I 2 and I 3 .