# 50+ Circuit Variables and Elements Questions

#### These are Circuit Variables and Elements Questions for Basic electrical and electronics engineering

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

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

3. Find i0 and v0 in the above circuit.

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

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

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

These are Circuit Variables and Elements Questions for Basic electrical and electronics engineering

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

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

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

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

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

These are Circuit Variables and Elements Questions for Basic electrical and electronics engineering

11. KCL is based on the fact that
a) There is a possibility for a node to store energy.
b) There cannot be an accumulation of charge at a node.
c) Charge accumulation is possible at node
d) Charge accumulation may or may not be possible.

12. Relation between currents according to KCL is

a) i1=i2=i3=i4=i5
b) i1+i4+i3=i5+i2
c) i1-i5=i2-i3-i4
d) i1+i5=i2+i3+i4

13. The algebraic sum of voltages around any closed path in a network is equal to ____________
a) Infinity
b) 1
c) 0
d) Negative polarity

14. Calculate potential difference between x and y

a) 4.275v
b) -4.275v
c) 4.527v
d) -4.527v

15. Find R-value from the below circuit?

a) 17.5 Ω
b) 17.2 Ω
c) 17.4 Ω
d) 17.8 Ω

These are Circuit Variables and Elements Questions for Basic electrical and electronics engineering

16. Determine currents I1 , I2 and I3.

a) -3.3A, -8.5A, 2.4A
b) 3A, -8A, 2A
c) 3.3A, 8.5A, -2.4A
d) 3.2A, 8.6A, 2.3A

17. All _____________ are loops but _______________ are not meshes
a) Loops, Meshes
b) Meshes, loops
c) Branches, loops
d) Nodes, Branches

18. Solve and find the value of I.

a) -0.5A
b) 0.5A
c) -0.2A
d) 0.2A

19. The basic laws for analyzing an electric circuit are :-
a) Einstein’s theory
b) Newtons laws
c) Kirchhoff’s laws

20. A junction whell two (or) more than two network elements meet is known as a ______________
a) Node
b) Branch
c) Loop
d) Mesh

These are Circuit Variables and Elements Questions for Basic electrical and electronics engineering

21. The symbol used for representing Independent sources
a) Diamond
b) Square
c) Circle
d) Triangle

22. Controlled sources are also known as
a) Independent sources
b) Dependent sources
c) Ideal sources
d) Voltage sources

23. I3 = α vx. This is _________

a) Voltage control voltage source
b) Current control voltage source
c) Voltage control current source
d) Current control current source

24. Inductor is _______________ element.
a) Active
b) Passive
c) Linear
d) Polar

25. Which of the below is valid?

a) 1
b) 2
c) Both
d) Neither 1 nor 2

These are Circuit Variables and Elements Questions for Basic electrical and electronics engineering

26. The below circuit is valid.

a) False
b) True

27. The opposing capacity of materials against the current flow is
a) Conductance
b) Inductance
c) Susceptance
d) Resistance

28. The conductance of a 923Ω resistance is
a) 1.08 * 10-3 mho
b) 1.08 * 10-4 mho
c) 1.02 * 10-3 mho
d) 1.02 * 10-4 mho

29. The current passing through a circuit is 7.2A and the power at the terminals is 27 watts.
Existence is ___________ ohms.
a) 0.5402
b) 0.5208
c) 0.5972
d) 0.5792

30. Relation between power, voltage and conductance
a) V = P2.G
b) V = P2/G
c) P = v2/G
d) P = V2 G

These are Circuit Variables and Elements Questions for Basic electrical and electronics engineering

31. Which of the following is a defined quantity?
a) Pressure
b) Polarity
c) Money
d) Length

32. The basic unit for luminous intensity is
a) Ampere
b) Candela
c) Coulomb

33. Which of the following is a correct relation?
a) Giga>Mega>Tera
b) Mega>Tera>Giga
c) Tera>Mega>Giga
d) Tera>Giga>Mega

34. Charge is
a) Unipolar
b) Bipolar
c) Tripolar
d) Non – Polar in nature

35. Separation of charge creates
a) Current
b) Voltage
c) Resistance
d) Friction

These are Circuit Variables and Elements Questions for Basic electrical and electronics engineering

36. The energy per unit charge is
a) Voltage
b) Power
c) Current
d) Work

37. If charge q = 3t2 + 2 then current is given by
a) 6t + 2
b) 3t2
c) 6t
d) 3t2 + 2

38. If energy w = 200t2+ 99 et + 2 then calculate at 0.1 sec
a) 148.52
b) 149.41
c) 149.95
d) 148.39

39. For the following circuit power is given by

a) –Vi
b) Vi
c) 0
d) 1