Electric Circuits Sheet 2 1- For the circuit shown, and using Ohm's Law a) If vg = 1 kV and ig = 5 mA, find the value of R and the power absorbed by the resistor. b) If ig = 75 mA and the power delivered by the voltage source is 3 W, find vg, R, and the power absorbed by the resistor. c) If R= 300 Ω and the power absorbed by R is 480 mW, find ig and vg. Answer: (a) 200kΩ, 5W;

(b) 40 V, 533.33 Ω, 3 W; (c) 40 mA, 12 V

2- For the circuit shown, and using Ohm's Law a) If ig = 0.5 A and G = 50 mS, find vg and the power delivered by the current source. b) If vg = 15 V and the power delivered to the conductor is 9 W, find the conductance G and the source current ig. c) If G = 200 µS and the power delivered to the conductance is 8 W, find ig and vg. Answer: (a)10V,5 W;(b) 40mS,0.6 A;(c) 40 mA, 200 V.

3- The terminal voltage and terminal current were measured on the device shown in Fig. (a ) The values of v and i are given in the table of Fig. (b). Use the values in the table to construct a circuit model for the device consisting of a single resistor..

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