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### EEE :: Circuit Theorems and Conversions

1. Find the Thevenin equivalent (VTH and RTH) between terminals A and B of the circuit given below.

2.  A. 4.16 V, 120 B. 41.6 V, 120 C. 4.16 V, 70 D. 41.67 V, 70

3. A certain current source has the values IS = 4 µA and RS = 1.2 M. The values for an equivalent voltage source are

4.  A. 4.8 V, 1.2 M B. 1 V, 1.2 M C. 4.8 V, 4.8 M D. 4.8 V, 1.2 M

5. Find the total current through R3 in the given circuit.

6.  A. 7.3 mA B. 5.5 mA C. 12.8 mA D. 1.8 mA

7. A 680 load resistor, RL, is connected across a constant current source of 1.2 A. The internal source resistance, RS, is 12 k. The load current, RL, is

8.  A. 0 A B. 1.2 A C. 114 mA D. 1.14 A

9. Find the current through R2 of the given circuit.

10.  A. 30.7 mA B. 104 mA C. 74 mA D. 134 mA

11. Determine IN for the circuit consisting of VS, R1, R2, and R3 shown in the given circuit.

12.  A. 676 mA B. 245 mA C. 431 mA D. 75 mA

13. A 120 V voltage source has a source resistance, RS, of 60 . The equivalent current source is

14.  A. 2 A B. 4 A C. 200 mA D. 400 mA

15. A 12 V source has an internal resistance of 90 . If a load resistance of 20 is connected to the voltage source, the load power, PL, is

16.  A. 2.38 mW B. 2.38 W C. 238 mW D. 23.8 W

17. In a two-source circuit, one source acting alone produces 12 mA through a given branch. The other source acting alone produces 10 mA in the opposite direction through the same branch. The actual current through the branch is

18.  A. 22 mA B. 12 mA C. 10 mA D. 2 mA

19. Find the current through R1 in the given circuit.

20.  A. 0.16 A B. 0.24 A C. 0.2 A D. 0.04 A