# Electric Circuits Questions and Answers – Analysis of a Circuit Containing Dependent Sources

This set of Electric Circuits Multiple Choice Questions & Answers (MCQs) focuses on “Analysis of a Circuit Containing Dependent Sources”.

1. Dependent sources are _____________ types.
a) 3
b) 2
c) 4
d) 1

Explanation: Dependent sources are 4 types. Voltage controlled voltage/current source and current controlled current/voltage source.

2. In case of a dependent voltage/current source, the value of this voltage/current source depends on _________
a) Voltage/current sources of an external circuit
b) Voltage/current source present somewhere in the circuit
c) Only on voltage sources
d) Only on current sources

Explanation: The name dependent itself tells us that they are dependent on some other source. A dependent voltage/current source depends on the value of the voltage/current source present somewhere in the circuit itself.

3. Find i0 and v0 in the above circuit.

a) 26A, 260v
b) 28A, 280v
c) 27A, 275v
d) 29A, 285v

Explanation: Applying KVL in loop1: 300= 3i + 10i0 ———- (1)
and i0= i+3i =4i
(1) → 300= 43i ,on solving i =6.976A, i0=27.90A, v0=279V.

4. The value of the voltage controlled current source ia=βva given β=0.3 and va=9.5mV.
a) 2.5 mA
b) 2.85 mA
c) 1.75 mA
d) 1.2 mA

Explanation: ia= 0.3*9.5*10-3=2.85mA.

5. Find I0 in the following circuit, R1= 1.1 kilo ohms, R2=3.25 kilo ohms, V= 3.7 v.

a) 1.5 mA
b) 2 mA
c) 0.5 mA
d) 1.2 mA

Explanation: By using the fact that the current is same in series connection resistors and voltage is same parallel, the above problem can be solved. I0 is divided into αIx and Ix. So, calculation these two gives the required current value.
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6. The value of the current controlled voltage source ,given β=0.8 and ia=9.5mA, is ___________
a) 8mV
b) 7.6mV
c) 0.0011mV
d) 0.0051mV

Explanation: va=βia

7. In a VCIS which is the controlled source and which one is the dependent source?
a) V-contorller, I-dependent
b) V-dependent, I-controller
c) Both V and I are controllers
d) Both V and I are dependent

Explanation: VCIS: Voltage-controlled current source. ia=βva, current value depends on the voltage value so voltage source is the controller and current is the dependent source.

8. In an ICVS which is the controlled source and which one is the dependent source?
a) V-controller, I-dependent
b) V-dependent, I-controller
c) Both V and I are controllers
d) Both V and I are dependent

Explanation: ICVS :Current-controlled voltage source. va=βia , voltage value depends on the current value so current source is the controller and voltage is the dependent source.

9. What is the other name for Dependent sources?
a) Uncontrolled sources
b) Time response elements
d) Controlled sources

Explanation: Dependant sources are also known as Controlled sources as there are controlled by other elements present in the circuit.

10. The analysis of a circuit containing dependent sources can be done using nodal and mesh analysis.
a) True
b) False

Explanation: The analysis of a circuit containing dependent sources can be completed using nodal and mesh analysis with the help of Kirchhoff’s laws and also by using various circuit theorems.

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