Question

2.2 154 EXPERIMENT dc 12 (a) Determine Rn and En for the network external to the 2-k2 resistor. (b) Determine the power delivered to the 2-k2 resistor using the Thevenin equivalent circuit. (e) Is the power determined in part (b) the maximum power that could be delivered to a re- sistor between terminals a and b? If not, what is the maximum power? For the network of Fig. 12.2 record the measured values of En and Rn from Table 12.1 in Table 12.8. Then, using PSpice or Multisim, and methods described in the text Introductory Cireuit Analysis, determine each quantity and record in Table 12.8. 2. TABLE 12.8 Table 12.1 PSpice or Multisim En Compare results for each quantity and try to explain any major differences. Atach all appropriate printouts.

Answer 1

For Rth open current sorce short Voltage source remove 2k resistor R_th = 4k Vertical-bar Vertical-bar 6k = 4 k times 6 k/ 4 k + 6 k R_th = 2.4 k \r\n Vth V - 36/6k + V/ 4k = 8 V [5/ 12] = 14 Vth = Eth = 33.6 V i = Eth/Rth + R_L = 33.6/ 2.4 k + 2k = 7.63 mA p = i^2 R = 7.63 mA^2 times 2 k. p = 116.62 mW Maximum power = Vth^2/4 Rth = 33.6^2/4 times 2.4 k. p_max = 117.6 mW