125 Marks]
In Figure 1(a), the power dissipation in resistor $R_3$ is known to be $P_3 = 24.92$ mW
$V_s = 60 V$
$R_1 = 2 k\Omega$
$R_2 = 10 k\Omega$
$R_3 = 2 k\Omega$
$R_4 = 8 k\Omega$
Figure 1(a). A series-parallel resistive network
Calculate
(i) the p.d. across $R_1$.
(ii) the source current, $I_s$.
(4 + 6 = 10 marks)
By applying the Superposition Theorem to the network shown in Figure 1(b),
calculate the voltage, $V_o$.
$2 k\Omega$
$4 k\Omega$
$I_s$
$V_s$
$5 k\Omega$
$V_o$
$2 k\Omega$
$12 V$
$8 mA$
Figure 1(b). A resistive network for the superposition principle problem
(15 marks)