Problem 2.23 Determine the amount of power supplied by the independent cur rent source in the circuit of Fig. P2.23. V1 I2 Ω 2 Ω 0.2 A 4 V1 + _Figure P2.23: Circuit for Problem 2.23. Solution: KCL at top node gives 0.2 + V1 4 −I= 0 AlsoI= V1 /2 (for the 2- Ω resistor). Hence, 0.2 + V1 4 − V1 2 = 0 V1 = 0.8 V. The voltage across the 0.2-A source is 2 V1 = 1.6 V. Power dissipated is P = V I= 1.6 × 0.2 = 0.32 W. All rights res erv ed. Do not rep roduce or dis tri bute. c 201 3 Nat ional T ech nol ogy and Sci enc e Pre ss
