Circuit Theorems Multiple Choice Questions - Set 02 - ObjectiveBooks

# Practice Test: Question Set - 02

1. Referring to circuit given, if R1 is changed to a 68 Ω resistor, what will be the current through it?

(A) 0.16 A
(B) 0.24 A
(C) 0.2 A
(D) 0.04 A

2. Norton's equivalent current (IN) is an open-circuit current between two points in a circuit.
(A) True
(B) False

3. A 12 mA current source has an internal resistance, RS, of 1.2 kΩ. The equivalent voltage source is
(A) 144 V
(B) 14.4 V
(C) 7.2 V
(D) 72 mV

4. Determine IN for the circuit consisting of VSR1R2, and R3 shown in the given circuit.

(A) 676 mA
(B) 245 mA
(C) 431 mA
(D) 75 mA

5. The Thevenin equivalent voltage (VTH) is the short-circuit voltage between two terminals in a circuit.
(A) True
(B) False

6. 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
(A) 22 mA
(B) 12 mA
(C) 10 mA
(D) 2 mA

7. A practical voltage source has a nonzero internal resistance.
(A) True
(B) False

8. Referring to the given circuit, the voltage and current for the load resistor, RL, is

(A) 450 mV, 4.5 mA
(B) 4.50 V, 45 mA
(C) 4.50 V, 4.5 mA
(D) 450 mV, 45 mA

9. An ideal voltage source has zero internal resistance.
(A) True
(B) False

10. A 470 Ω RL is connected across a voltage source, VS, of 120 V. The source's internal resistance, RS, is 12 Ω. What is the output voltage across the load?
(A) 120 V
(B) 0 V
(C) 117 V
(D) 12 V

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