Question

Problem 4.54 PSpiceMultisim 13 of 15 > Assume you have been asked to find the power dissipated in the 1 k2 resistor (connected between points A and B) in the circuit. (Figure 1) Part C Would you change your recommendation if the problem had been to find the power developed by the current source? 0 Yes evious Answer Correct Figure 1 of 1> Part D Find th e power delivered by the current source 2.5 k2 2 k2 Express your answer with the appropriate units 1 kQ 5 k2 1 ki2 Paev_ Value Units Submit Request Answer

Answer 1

a) There are three unknown voltages & only two unknown mesh currents Use mesh current method to minimize equation b) Use KVL for loop 1 2.5 K (i_1 - 0.026) + 2 k (i_1) + 1 k (i_1 - i_2) = 0 5.5 k i_1 - 1 k i_2 = 65 i_1 = 65 + 1 k i_2/5.5 rightarrow (1) Use KVL for bottom loop 1 k i_2 + 5 k (i_2 - 0.026) + 1 k (i_2 - i_1) = 0 - 1 k i_1 + 7 k i _2 = 130 rightarrow (2) Solve (1) & (2) i_1 = 0.0156 A i_2 = 0.0208 A i_1Ka = i_1 - i_2 = -5.2 mA P_1ka = (i_1ka)^2 (1ka) = 0.027 W c) No, the voltage across the 26 mA current source is readily available from the mesh currents , & solving two simultaneous mesh - current