Question

Q1. Determine the power consumed by each circuit element (PA, PB, Pc, Po, PE and P), respectively, and specify whether each circuit component is supplying power or absorbing power (dissipated power) shown in Fig. 1 and Fig 2. le=-2A Fig. 1 Fig. 2

Answer 1

current is entering from positive terminal so element will Absorb the power. current is entering From negative terminal so element will delivers the power. FIG.1 using KVL in mesh (1) in Anticlock wise direction + uv + v_A = 0 v_A = -4 power in A element: P_A = + (V_A) (I) = +(-u)(-2A) = 8w P_A = + 8W +ve sign means Absorbed power power in element B. P_B = + (V_B)(I) = + (u)(-2) = -8W P_B = -8W -'V_c' sign means delivered power. \r\n FIG.2 Assume Element elementof terminal in current direction using KVL in mesh (II) + V_elementof - 3V + 0V + (-u) = 0 V_elementof - 3 - 4 = 0 Therefore V_elementof = 7V power in element 'c': P_c = V_c I = 0.(-2A) P_c = + 0W power in element 'D': P_D = -(V_D) (I) = -(3) (-2A) P_D = 6W Absorbed power power in element 'E': P_E = + (V_E) (I) = + (+ 7) (-2) P_E = -14 W delivered power power in element 'F': P_F = +(V_F)(I) = +(-u)(-2) P_F = + 8W Absorbed power.